4-D Warriors, developed by Coreland and published by Sega in 1985, has two jetpack-equipped warriors crossing wormholes between dimensions. The design's standout idea is that movement isn't just horizontal like any shooter of the time: crossing the top edge of the screen teleports players into an alternate universe, forcing them to think of the map as two simultaneous layers before facing off against the bosses. It's a rarity even among those who closely follow Sega's 80s arcade catalog: it never gained the recognition of the studio's other shooters, but its four-direction scrolling idea makes it an interesting object of study for understanding the experiments of the era before the genre standardized.
If you liked this one
