Deciding Mechanics for my game

Pretty sure that I'll implement some movement first. I dunno, having a bit of a crisis on determining if this game is "too immature", but hopefully people will get the not so secret reference to a secondary character in another game.

One big challenge that I'm seeing down the road is viable objectives. I'm struggling to think "Catching objects in a booger is hilarious and could be fun, but how does it relate to a small world? Can these boogers house the perfect combination to create small microbiomes? We'll see I guess!