Algodoo

With all 56 marbles in all of them just so you can delete marbles that are out. If a fixed number of marbles lose a life, I've set that number to 20, but you can delete teleporter blocks, Translucent Magentas etc. if you're playing with fewer marbles. You can copy and paste a round into a new scene to play for yourself if you wish, but DON'T play this entire scene. Also note that this is the longest description that I've ever written for a scene. The rest of the rounds are coming soon!