The Rainbow Maker – A game made by Anagh’s World for Trijam #113: The 3 hour game jam

https://anaghsworld.itch.io/the-rainbow-maker

You play as a robot called “Indra” a.k.a “The Rainbow Maker”. Evil forces are sending out the first letter of each rainbow color called the “Dark” letters. You need to defend the universe by responding the “Dark” letter with the “Rainbow” letters. As soon as you destroy all the “Dark” letters, you form a RAINBOW.

Source: itch.io