To play, overlap balls (they don't have to be the same color!) to "merge" and make bigger balls, giving you money. Balls spawn on a random position on the grid every two seconds, giving you money. The "Level-Up Spawn" button spawns bigger balls, giving you more money. If it doesn't say "Not enough money." after clicking it, click it again. The goal is to merge two of the biggest balls. You'll know when that happens if it turns back into a blue ball. If you hover one of the balls over the trash can and let go, it will disappear.
Everything is by me. No more balls will be added as this project is getting big and I'm running out of creativity. I literally just added a block and deleted a block.