The year is 2268. After a slow recovery of ecological disasters and alien
invasions of Earth the human race is exploring the galaxy to expand their
living space. The player has been sent to investigate planet Gunsar436, but
suddenly all contact between the player and their fleet is gone.

Deep Trouble 2 is reminiscent of an underwater version of Star Wars: Rogue
Squadron. The player controls their ship via keyboard and progresses through
11 levels by destroying alien ships and completing different missions. Long
levels are divided by checkpoints preceding major conflict zones. Destroyed
alien vessels provide the player with more ammo and, by exploring their
surroundings, players can find shields, energy, and other bonuses.