arrows to move z to jump you can collect coins and on walls you can bump
Nintendo the loading screen prevents the game from lagging, but if it lags is because you are constantly moving and the game is kinda lagging from having to clone the tiles in diferent and diferent positions, but while idle the game does not need to clone tiles so be idle, and move again and then it'll start un-lagging, if it still dosen't work press the green flag again (don't forget to save the course before pressing the green flag it you were creating the level)