4-D Warriors

4-D Warriors is a shoot 'em up arcade game released by Sega / Coreland in 1985.
Gameplay.
The game is a horizontal scrolling shooter in which the player takes control of a jetpack-propelled space warrior who travels between parallel universes and worm holes (hence 4-D or 4 dimensions) throughout the game. Flying over the top of the play field will transport the player to an alternate universe. The player can travel back and forth defeating enemies until they reach a boss creature. On some occasions a worm hole will appear in the middle of the play field and the player is taken to even stranger worlds.