I have an idea. Make this VR, and you have to take care of each slime, finding fruit and going around. The more you feed a slime, the bigger it gets. you can also breed slimes, getting a random mix of both slimes traits onto a new slime. You can play with a slime if it likes you, doing things like playing fetch and riding the slimes. Just a suggestion. You can continue the game however you want. Or of course, you could just end it off with a nice and relaxing 8-bit photography simulation game. :)
I really enjoy this game. Got some good pictures that would make good desktop backdrops. Also think it would be cool to give slimes different expressions.