Let's make the blocks random sizes.

Make sure that your new command has a green block in front of it.

stage.set_background("city") sprite = codesters.Sprite("bike") sprite.set_size(0.5) sprite.go_to(-200, 0) stage.set_gravity(10) stage.disable_all_walls() def space_bar(): sprite.jump(5) # add other actions... stage.event_key("space", space_bar) def interval(): sprite.turn_left(15) # add any other actions... stage.event_interval(interval, 2)