interesting ideas, but they're all not unique
A multiplayer game where when you shoot people you become smaller and they become bigger and the goal is to lose all of your mass -> forgot the name but theres this game where ur a polygon and when you shoot you lose 1 side but if you hit an enemy you gain their sides and the goal is to have the most amount of sides
urs is just reversed in terms of sides and stuff
A action-packed level-based game where there are interesting enemies that you need to shoot at the get better gear -> this is just minecraft
A circle with the radius that the player must follow, if they get out of it, they DIE, level-based shooter-game where they have to dodge obstacles and shoot down enemies and bosses while trying to stay in the circle -> this is just your average dodge game, but with a zone u need to be in rather than a zone u need to avoid