interesting ideas they sound cool, especially 2 and 3. when making this game, I was thinking about doing something like an endless survival game. We are also on an island and try to survive as long as possible. A large open world, biomes, events at different times of the day and year, monsters in heat, tentacle plants, a lot of cool things could be added. This one could work in a similar camera setting to TrappedOnAnIsland. a few skins (also naked).
Alternatively, I'm tempted to make a mini 2d platformer where we fall through a hole in the ground to the lowest level of the tentacle cave and have to go through the whole thing to escape. Of course, the cave will try in every possible way to convince us that this is where we belong.
Although right now I mainly want to focus on improving this game, and there is a lot to do.