Tic-Tac-Glow is a minigame that appears in Mario Power Tennis game. The game is in Delfino Plaza's court, which the player must shot water balls to the opositte field filled of goop (3x3 goop spots) to free Shine Sprites. Rules are:
- Turn on a water nozzle to receive a water ball.
- Obtain points making a line on the goop spots.
- Make again this, then Piranha plants will soil again to acumulate points for you.
- Obtain max points on a restrict time.
This game has the same Tic-Tac-Toe style play.