Welcome to DICE. Arrow keys can move the characters, as well as WASD and swiping on mobile. Press space or tap the screen to swap characters. Don't land on two squares with more than 6 dots between them. Get both characters on the white to win the level. I pushed in a hidden achievement as well.
I found 8-Bit Puzzler, the music, at soundimage.org That tune was made by Eric Matyas. Thank you for letting this be my first game with sound. Rest of game made by me. If it's worth noting, the player movement script was modified from one of my previous games, A Priori.