So, here is it! Finally!
Play with the arrow keys. Use the R key to restart a level.
When you start, it may happen that you get stuck in the wall around the level. If that happens, press R and play normally. THIS BUG APPEARS VERY RARE, SO DON'T WORRY.
Credit to RHY3756547 for platforming engine!
Based on: SMASH! Beta by
Original project: SMASH! Alpha by