Jetpack is a freeware platformer that was originally released back in 1993. In the game players fly around with their jetpacks on collecing green emeralds scattered throughout each level. Once all of the emeralds have been collected you'll be able to advance to the next screen. Not as easy as it sounds though as there are obstacles and challenges that stand in your way. In addition to having a jetpack, you'll also be equiped with a phase shiter that allows you to get through some walls.
Jetpack includes 100 pre-built levels but also includes a level editor which allows you to create your own. Finally Jetpack also includes a multiplayer mode that supports up to eight players, however with this multiplayer mode players take turns on the same PC.