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Game Developer – 3D Interactive Simulation We are looking for an experienced Game Developer to build a realistic and interactive 3D simulation game using Unity or Unreal Engine. Responsibilities Develop realistic 3D environments and interactive scenes. Build player movement, camera, navigation, and interaction systems. Create characters/NPCs with dialogue, animations, and basic AI behavior. Develop branching scenarios where player decisions affect outcomes. Build hospital and emergency-based gameplay scenarios. Implement interactive objects, equipment, and environment elements. Develop missions, challenges, levels, scoring, rewards, and progression. Implement AI-powered NPC conversations and interactions. Integrate AI feedback based on player actions. Create game UI, animations, sound effects, and visual effects. Optimize gameplay performance and fix bugs. Integrate APIs/backend services where required. Required Skills Unity or Unreal Engine C# or C++ 3D Game Development NPC & AI Systems Character Animation Dialogue/Branching Systems Game UI/UX Level Design API/AI Integration Performance Optimization Experience with simulation, educational, healthcare, RPG, or AI-powered games is a strong plus. Please share examples of your previous 3D games or interactive simulation projects when applying.
Project ID: 40744047
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38 freelancers are bidding on average ₹22,821 INR for this job

Hello, I have carefully reviewed your requirements for a realistic 3D interactive simulation using Unity or Unreal Engine. With 9+ years of game development experience and 200+ successfully delivered games, I will build immersive environments, realistic interactions, NPC AI, branching scenarios, hospital/emergency gameplay, missions and AI-powered dialogue while maintaining strong performance. You will get: 1. Realistic 3D environments and interactive scenes 2. Player movement, camera and interaction systems 3. NPCs, animations, dialogue and AI behavior 4. Branching scenarios and decision-based outcomes 5. Hospital/emergency missions and challenges 6. AI-powered conversations and feedback 7. UI/UX, VFX and sound integration 8. API/backend integration where required 9. Optimization, testing and bug fixing 10. Completed NDA & IP agreement I will discuss the simulation scope, milestones, timeline and technical approach based on your requirements. Available to start immediately. Come inbox & let’s get started. Best regards, Sohaib Pasn Games
₹25,000 INR in 7 days
6.8
6.8

Dear Client, I read "3D Interactive Simulation Game Development" carefully and understand you need WhatsApp Business API integration to automate customer communication and business workflows. I can integrate WhatsApp Business API with your existing system for automated messages, templates, notifications, order updates, customer conversations, webhooks and admin-side communication. I can also connect WhatsApp workflows with your CRM, ERP or custom application. A few quick questions: Are you already using Meta WhatsApp Business API, or should I set up the complete integration? What workflows do you want to automate — orders, notifications, customer support, or all of them? Thanks & Regards, Deepak
₹24,375 INR in 14 days
5.2
5.2

As a seasoned Unity Game and Mobile Application Developer, with over 9 years of experience in the industry, I have successfully designed, developed, and optimized numerous high-performance games and applications - many of which showcase the skills required for your project. My robust knowledge of Unity, C#, API integration and NP/ AI systems are a few examples of how my expertise aligns with your needs. What sets me apart in this highly competitive field is my wide-ranging portfolio that encompasses diverse projects such as multiplayer gaming solutions, educational simulations, and RPGs. I believe this project offers a unique opportunity to integrate advanced gameplay features along with my niche in simulative and AI-powered games. I have always emphasized delivering quality solutions tailored to business requirements, enhancing user experience through stunning design, seamless UI/UX implementation, captivating animations/effects & precise sound effects. Additionally, my proficiency in optimizing gameplay performance and fixing complex bugs under time constraints would be a valuable asset for your project. Thank you for considering my proposal. I eagerly await the chance to discuss how my skills can bring your project to life with maximum realism and interactivity. Together we can create something extraordinary!
₹65,000 INR in 18 days
5.2
5.2

As a seasoned game developer with expertise in Unity 3D, C#, and 3D game development, I am the perfect candidate for your project. My portfolio spans over nine years of experience building both mobile and web-based applications, demonstrating my versatility in delivering immersive user experiences across different platforms. What sets me apart is my ability to not only develop stunning 3D environments but also create compelling gameplay scenarios that engage players at multiple levels. I have a strong command over NPC and AI systems, which would be crucial for creating realistic hospital and emergency-based scenes tied with branching scenarios. My knack for performance optimization ensures that the game runs smoothly without sacrificing visual quality or interactive elements. Moreover, my knowledge on API/AI integration can allow for seamless incorporation of any third-party services needed for enhanced gameplay experiences. I take an iterative approach, involving clients in every step to ensure their vision aligns flawlessly with the final product. Choose me to turn your idea into reality, and you won't be disappointed!
₹25,000 INR in 7 days
5.2
5.2

Hey! I can handle this 3D interactive simulation game development easily. I have built and optimized 3D games using Unity and Unreal Engine about 12 times recently, including mobile app deployment and interactive gameplay mechanics. Which engine are you planning to use, Unity or Unreal? That will help me tailor the workflow and asset pipeline to fit your needs perfectly. My approach: 1. Planning: Understand your simulation goals and core gameplay features. 2. Development: Build the 3D environment, program interactions with C# or Unreal’s Blueprints, and integrate UI elements. 3. Testing & Optimization: Ensure smooth performance on mobile devices, fix bugs, and polish visuals. 4. Delivery: Provide the full project with clean, documented code, ready for publishing. I’ve worked on similar projects that required real-time user interaction and realistic physics, so I know how to balance quality and performance. Can you share more details on the game concept and target platforms? Aakash P.S. I’d be happy to share samples or discuss your vision in detail anytime. Just send a message!
₹12,500 INR in 14 days
4.4
4.4

Hi, we have an experienced Unity/Unreal game development team skilled in 3D simulations, C#/C++, NPC AI, dialogue and branching systems, character animation, UI/UX, level design, and AI/API integration. We can build the complete hospital/emergency simulation with interactive environments, missions, progression, AI-powered NPC conversations, feedback systems, VFX, audio, and performance optimization. We can share relevant 3D game/simulation work and discuss milestones and timeline.
₹25,000 INR in 7 days
4.5
4.5

As a dedicated and skilled game developer, I would be thrilled to have the opportunity to bring your 3D interactive simulation game to life. With years of experience creating immersive games and simulations using Unity, Unreal Engine, and C++ programming languages, I am confident that I have the expertise and skillset needed for this project. Implementing various NPC & AI systems, character animations and dialogue/branching systems have been a part of my routine workflow. Moreover, with my proficiency in handling complex game UI/UX design and level designing, I can assure you that your 3D environments and interactive scenes will be developed to be as realistic as possible. Integrating APIs or backend services is also part of my area of expertise, a skill all the more crucial for your project requirements. My ability to create challenging missions, deploy scoring patterns along with incorporating reward-based progressions makes me well-suited for your project's needs. Your project's focus on healthcare-based gameplay scenarios, AI-powered NPC interactions and optimized performance resonates well with my specialized work areas. I'm confident that my skills and experiences, along with my commitment to high-quality output aligned perfectly with your visions for this project will result in a cutting-edge 3D simulation experience for your users. I eagerly anticipate the prospect of collaborating with you on this exciting venture.
₹25,000 INR in 7 days
4.1
4.1

With a background in creating immersive 3D environments and interactive gameplay, I am excited about the opportunity to develop a realistic simulation game using Unity or Unreal Engine for hospital and emergency scenarios. Could you provide more details on the specific AI feedback mechanisms you envision for player actions in this project? Regards, Yogesh Kumar
₹18,880 INR in 10 days
3.9
3.9

As an experienced game developer with a robust background in 3D game design, specifically using Unity and Unreal Engine, I am confident in my ability to bring your interactive simulation game to life. I have a deep understanding of player movement, camera navigation, and interaction systems that I’ve honed through my extensive coding work with both C# and C++. My expertise extends past the technical aspects too; I have excellent skills in character animation and dialogue/branching system development. Additionally, my experience in building API integrations not only matches one of your specified requirements but will also greatly benefit your project. For instance, I have integrated AI functionality into various projects which aligns well with the AI-powered NPC conversations and interactions you are seeking. Over the years, I have specialized in ensuring optimal performance in games while fixing bugs promptly - this will be of significant value to you as we progress through different missions, challenges, levels, scoring, rewards, and progression.
₹12,500 INR in 3 days
4.0
4.0

Leveraging over 5 years of experience as a Full Stack Developer with a specialty in Unity and Unity 3D, I am confident in my ability to deliver dynamic and compelling projects that meet and exceed client expectations. My well-honed skills in C#, C++, and API/AI Integration are directly aligned with your requirements for the 3D Interactive Simulation Game. I have an eye for detail when it comes to character animation, level design, game UI/UX, and performance optimization- these skills will translate smoothly into crafting realistic 3D environments, building player movement & navigation systems, implementing AI-powered NPC conversations and interactions, integrating essential APIs/back-end services as relevant, and more. Finally, my prior experiences in developing educational games, the similar RPG genre, healthcare-related applications make me a strong fit for this project. I understand the demands your project necessitate; creating branching scenarios affected by player decisions that lead to unique outcomes. That's why I approach every new project with both a technical mind and a gamer's mindset - because at the end of the day, I'm passionate about building experiences that engage and captivate users.
₹37,000 INR in 7 days
3.9
3.9

With over a decade of experience in game development, my team at Colotechnologies is well-equipped to deliver the 3D interactive simulation game you're envisioning. From designing immersive and realistic environments to crafting intricate NPC and AI systems, we specialize in every aspect required for your project. What sets us apart is our versatility; we've honed skills in Unity, Unreal Engine, C#, C++, UI/UX design, level design, performance optimization — the very tools and domains crucial to your venture. Our grey matter doesn’t just dabble in game dev - we approach work with Intense curiosity, never shying away from diving deep into the needs of projects. Within minimal project knowledge we can churn out gameplay programming for even the most complex mechanics. Additionally, we bear significant experience in integrating APIs and back-end services – ensuring an efficient and seamless gaming experience for users. Of course, game creation has always been about more than just skill sets; passion and creativity play a huge role. We love turning ideas like yours into realities, be they simulation projects or otherwise. Our broad array of previous clients from different industries gives us the confidence in building a unique experience specifically catered to you. We look forward to discussing your vision more heavily and providing you a remarkable product that exceeds all your expectations.
₹25,000 INR in 30 days
0.0
0.0

We recently completed a similar 3D simulation project using Unreal Engine, and I can jump right into yours without delay. Your focus on building realistic hospital-based gameplay scenarios aligns perfectly with my experience in developing interactive environments and NPC systems. With a strong background in both Unity and Unreal Engine, I excel in creating engaging player movements, AI behaviors, and dynamic dialogue systems. I have successfully integrated APIs to enhance gameplay and ensure seamless interactions. My work prioritizes performance optimization and high-quality visuals. Are you planning to use existing assets for the characters and environments, or will everything be custom-built? Additionally, do you have a specific design reference for the UI and interactions in mind? I would like to discuss your project in further detail. Best Regards, Charl
₹28,150 INR in 7 days
0.0
0.0

I can deliver '3D Interactive Simulation Game Development' end to end — clean architecture, tests, and deployment. I'll start with a short plan, share progress daily, and hand over production-ready code. Could you confirm your timeline and must-have features so I can lock the scope?
₹21,838.72 INR in 7 days
0.0
0.0

Hello, you need a 3D hospital and emergency simulation with branching decisions, interactive NPCs, scoring, and AI-driven dialogue and feedback, built in Unity or Unreal. I work professionally in Unreal Engine with C++, building real-time interactive 3D experiences, and my UE5 project ArchiCloud Studio, with live customization streamed to the browser through Pixel Streaming, shows how I handle interaction systems, UI, and performance. I would start with a playable vertical slice covering player movement, one hospital scenario, a branching-dialogue NPC, and basic scoring in about four weeks, then scope the remaining levels and AI integration from there. What learning or training outcomes should the branching scenarios ultimately measure? I'd be glad to talk through the details and get started whenever you're ready.
₹15,000 INR in 7 days
0.0
0.0

First decision needed before scope lock: this budget fits a focused vertical slice, not a full multi-level simulation, so v1 will be one hospital/emergency scenario built to a polished standard rather than several shallow ones. Delivery plan: v1 within 3 working days — a single playable scene (Unity, C#) with player movement, camera, interaction prompts, one NPC with branching dialogue and two outcome paths, basic scoring. Days 4-5 add UI (objective/score panel), sound effects, performance pass, and bug fixes based on your feedback, then packaged build handover. Two decisions made now and why: Unity over Unreal, because C# iteration speed suits a tight scope and timeline better than Unreal's heavier build pipeline; and NPC animation will use free Mixamo-rigged characters rather than custom rigging, keeping budget inside scope while still giving natural movement. I do not promise a full multi-mission game, open-world hospital, or live calls — all handover is a written build note plus the project files, and larger scope (more scenarios, voice-acted NPCs, full AI-driven dialogue) is a clear next-phase add-on once v1 is approved. Question to start: do you have a reference image or floor plan for the hospital scene, or should the first room be built from a generic ER layout. Price: 17200 INR fixed · Timeline: 5 working days from access/brief Konrad
₹17,200 INR in 5 days
0.0
0.0

Hi Pallabi, I went through the project brief as well, and I really like the direction of the product. The case flow — scenario → investigations → diagnosis → management → outcome — makes this much more than a standard educational game. With 15+ years of experience across mobile applications, UI/UX, interactive products and backend integrations, I’d focus on making that complete gameplay flow smooth while keeping the system flexible for future cases. One thing I’d build carefully from the start is the data-driven case structure. Patient details, vitals, investigations, management cards and English/Hindi content shouldn’t be hard-coded, so new cases can be added without changing the game logic. I’d also cover the Unity gameplay around timers, mentor feedback, decision consequences, level/case unlocking, scores, badges, leaderboard and your AWS/backend integration. I’d suggest starting with one complete vertical-slice case first. Once that works end-to-end, the same foundation can be extended across the remaining levels and cases. A few things I’d like to clarify: 1. Is the current frontend demo already built in Unity, or is it a separate prototype? 2. Is Android confirmed for the MVP, with WebGL potentially coming later? 3. Will your team provide the Blender assets, or should we handle/refine those as well? Once I understand these points, I can suggest the right milestones and timeline.
₹25,000 INR in 7 days
0.0
0.0

I recently helped a business turn a similar idea into a clean, professional solution that was built around what they actually needed. I can help you achieve the same, with a solution that is reliable, user-friendly and built around your goals. I noticed you specifically need realistic 3D environments and interactive scenes. That’s an important part of getting this project right, and it’s something I can confidently handle. My expertise includes Unity development, NPC & AI systems, and performance optimization. We also have 75+ 5-star reviews on similar projects and rank in the top 1% among 75 million users! I already have a few ideas for your project. Message me and I’ll share how I’d approach it. Regards, bhavnaramsing
₹28,150 INR in 7 days
0.0
0.0

UE5 developer with hands-on game experience, specializing in Blueprint, AI systems, UI, and optimization.
₹14,000 INR in 10 days
0.0
0.0

I recently helped a client develop an interactive simulation game that focused on realistic environments and engaging gameplay. I will create a 3D simulation that immerses players in hospital scenarios, integrating AI for realistic interactions. I noticed you need NPCs with dialogue and branching scenarios, which aligns perfectly with my experience. My skills in Unity, C#, and AI integration ensure I can deliver a high-quality game. I have successfully completed multiple projects similar to this one. I am building my presence on Freelancer, so I give every client full attention, quick replies, and clear updates, and I would love this to become a long-term working relationship. What specific gameplay mechanics are you envisioning for this simulation? Regards, Luca.
₹15,000 INR in 7 days
0.0
0.0

The demand for immersive 3D simulation games is on the rise, especially in fields like healthcare and education. I understand the importance of creating realistic environments that engage players and reflect real-world scenarios. With my experience in both Unity and Unreal Engine, I can help bring your vision to life. Your project requires a focus on player interaction, character AI, and branching narratives. I have successfully developed similar projects where player choices significantly impacted outcomes, ensuring a dynamic gaming experience. My approach centers on understanding your goals and maintaining clear communication throughout the process. Our focus is on delivering work that's reliable, well thought out and aligned with what the client is trying to achieve, not simply completing another project. I’d be happy to share ideas or insights on optimizing gameplay and developing engaging scenarios. Let’s connect and explore how we can create something exceptional together. Regards, Stephen
₹12,500 INR in 7 days
0.0
0.0

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