If you're trying to become the world's best marker flipper, you've come to the right place! Press and hold the space bar, then let go to flip the marker. You've got to land it on the table! "Perfect" Flips are worth 2 points instead of 1! Press M to switch the background, if you'd like.
Credits to @Will_Wam for the great Bottle Flip game, Will_Wam's Bottle Flip: scratch.mit.edu/projects/118984793/