Ikaruga

Control a ship in a vertical shoot ’em up across five stages of enemy waves and boss battles. The ship and incoming fire each have one of two polarities: black or white.

Switch polarity to absorb bullets that match your ship’s color, while avoiding bullets of the opposite color. Absorbed fire charges a homing laser, and defeating three enemies of the same polarity in succession earns a chain bonus.

Choose from three difficulty levels and Arcade or Prototype mode. The game also supports two-player local play and a mode where one player controls two ships, alongside saved replay data and leaderboards.

Players often praise the polarity mechanic for turning bullet avoidance into a tactical choice: matching fire can be absorbed for power, while switching colors creates openings to attack. Reviews also highlight the satisfaction of learning stages and building score chains, along with the art and soundtrack. Many describe the challenge as demanding and rewarding, though some find it too punishing or confusing to enjoy casually.