In Low G Man, the player uses various weaponry (a freeze gun, a spear, fireballs, etc) to defeat enemies in a quest to defeat aliens which have invaded earth. The player can also upgrade how high he jumps, allowing for jumps much higher than the screen.
The game contained elements of platforming, secret exits that led to bonus levels, and boss fights. It also used a password system for the player to continue their game.
Source: User Summary