Keith Courage in Alpha Zones is a 1989 science fantasy platform game released by NEC for the TurboGrafx-16.

[1] It was originally released in Japan by Hudson Soft on August 30, 1988 for the PC Engine (The TG-16's Japanese counterpart), under the title Mashin Hero Wataru (Japanese: 魔神英雄伝ワタル, Hepburn: Mashin Eiyūden Wataru) which is adapted from the anime television series of the same name.

Succeed here and the player will win the game, recapturing the Earth and restoring humanity's place in the universe.

The player's goal is to collect the stolen riches left behind by the invaders and buy your way out of trouble with money.

Upon reaching the end of the overworld level, Keith is transported via rainbow to the underworld, whereupon he adopts the Nova Suit.

The underworld levels are more complex and menacing than the colorful overworld, with aggressive nightmare creatures and a larger landscape to travel with more of a focus on navigating not only horizontally but also vertically.