how can i change the keyboard controls ?

Nice little game here. It's definitely not even close to a realistic pb game but it's got it's ups and has enough intrigue to keep me interested. There's at least 1 screen/level in the demo where the ball can just sit and rest until you give a nudge but that could well be by design. It's not the best graphically, but that's explained in the game descriptions and it handles quite weird but the attacking unseen opponent is pretty neat and really changes things up. The nudge feature isn't what you can expect ...

How would one get said mushroom to spawn? is it a thing where the mushroom has to spawn and time passes before 'killing' it? or something else? neat game btw :)

nice game so far! In my personal opinion the ball accelerates too slow, it feels like a kind of low gravity mode. I don't know if thats was intended but I caught myself getting a bit inpatient as it took a lot of time for the ball to come down again. I don't know if you want to tweak the mechanics but perhaps a setting for different gravities or a slider would be possible to implement....

For the dev. Before I get to the negative stuff, I just want to say that this game was everything I hoped it would be. It was great fun and I enjoyed every bit of it. In level 15 (City 3) the garbage bins stop spawning trash at a certain point which is preventing the "Let the trash pile up" challenge from being completed. Not sure if this is just a me problem or if this is something that needs to be addressed, so I figured I'd say something. Also, there is a fairly consistent crash that occurs in level 11...