A submarine simulator is a video game in which the player commands a submarine. The usual form of the game is to go on a series of missions, each of which features a number of encounters where the goal is to sink surface ships and to survive counterattacks by destroyers. Submarine simulators are notable for the highly-variable pace of the game; it may take hours of simulated time to get into position to attack a well-defended convoy, and sub simulators typically include an option for players to adjust the ratio of real time to simulated time up and down as desired.

AquaNox is a series of submarine-based first-person shooter/simulation video games set in the distant future. The collection includes AquaNox, AquaNox 2: Revelation and AquaNox: The Angel's Tears. The predecessor and the starter of the series is the MS-DOS title Archimedean Dynasty.