Incredibox Yellow Colorbox is a fun fan-made version of the music game Incredibox. This one has all yellow characters, each making a special sound. You can drag and drop icons onto these characters to make them sing and create your own music. Try different sound combinations to unlock cool animated choruses that make your music even better. If you want to give it a try, you can play it quickly on kbhgames.com. made by BaggerHead (freepies).