Tippy Coco is a free, open-source game by Chris Coyne (chriscoyne.com / @malgorithms). The inspiration for this game was Slime Volleyball, a 1999 Java Applet by Daniel Wedge & Quin Pendragon. I called an earlier version of this game They Came from the Ground.
The game is programmed in JavaScript (well, TypeScript) and uses simple HTML Canvas drawing.
Music in Tippy Coco is by my friend Christian Rudder, of the band Bishop Allen. "Rejected!" and "Slam!" and "Kiss" were voiced by Jennie, Cameron, and Abbott Coyne. And the character TippyCoco is named after our friends' dog, TippiCocoa.