I would love to be able to upgrade my mouse...Like longer holding on wall...Higher jump...Longer jump ans stuff...An ability point for every 100 cheese or something like that...
what about making a multiplayer?2D battles are enough but maybe you should make a 3D RPG where you can choose between a human and worm...worms should start as a lil worms that eat just vegetables and then evolve...you should duel other players or attack human villages,make groups...and humans will have to kill worms or defend their villages...