a Roblox simulator where you have to extract air by holding the left mouse button there would be spawn in the middle and 2 leaderboards for most rebirths and most lifetime air collected. there is a shop where you can buy larger tanks and better extractors. There would be another spot for eggs, better eggs unlocked the higher islands you went on. pets help your money multiplier and more eir extracting. there would also be a personal upgrades area where you can use gems from your rebirths to get extra jumps, bigger rebirth options, speed, pet luck, more gems. when you rebirth, you get a multiplier for coins when you sell. The more air you have in your tank, you can jump higher. to get to higher worlds, you can jump on clouds and tiny islands to get to higher islands and you can see your height on a sidebar.