Move your cursor/mouse up/down to move the left. AI Plays the right side. Click up or down arrow to change the slowness of the AI. If it's pass 0 then you have to wait the amount of seconds the slowness is in positive zone. If you ever change it to like 6 then you have to wait 6 seconds. If you change from 6 to 17, you have to wait till next bounce in order to make it that slow.
All made by me. NOTE: Removing lines means no score