Ikaruga is a vertical shoot 'em up game developed by Treasure and available on PlayStation 4. The game features a unique polarity-switching gameplay where the player's ship, all enemies, and bullets are black or white. The player can switch the ship's polarity at will and "get hit and absorb" enemy bullets of the same polarity. The game also features a chain bonus where the player can defeat three enemies in a row of the same polarity to score higher.

The game has five levels with tactical level design and boss battles. There are three difficulty levels to choose from: EASY, NORMAL, and HARD. The player can change tactics depending on the difficulty. Ikaruga also has two game modes: ARCADE and PROTOTYPE (not hidden). The game supports replay data save, and the player can download them from the leaderboards. Ikaruga supports Xbox360 controller, keyboard, and mouse. Overall, Ikaruga is a fast-paced, smooth, and challenging game with spectacular 3D graphics.