A 1988 PlatformGame starring a boy and his mecha suit, which appear in alternating sections of each of seven levels. The boy is only armed with a sword, but he can buy bombs and better swords which the mecha suit can use in the harder second half of each level.

The game originated in Japan as ''[[Anime/MashinHeroWataruSeries Mashin Eiyuuden Wataru]]'', a LicensedGame based on an anime by {{Creator/Sunrise}} of the same title, but when NEC Home Electronics released it in the U.S. and made it the pack-in game for the UsefulNotes/TurboGrafx16, they retitled it ''Keith Courage in Alpha Zones'' and wrote a new plot involving an AlienInvasion by the Planet of B.A.D. (Beastly Alien Dudes).
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!!Tropes:
* AmericanKirbyIsHardcore: [[http://www.vintagecomputing.com/wp-content/images/retroscan/kk_page_1_large.jpg No]] [[http://www.blogcdn.com/www.joystiq.com/media/2008/03/watarukeith.jpg kidding.]]
* {{BFG}}: The enemy Titan Guard carries an enormous pistol on top of its head.
* CriticalExistenceFailure: If Keith is killed while in the [[PoweredArmor Nova Suit]], it explodes.
* DeadlyDoctor: The enemy Dr. Sting flies through the air and throws syringes.
* DegradedBoss: The first boss is a recurring {{mook}} in subsequent stages.
* DualBoss: The fifth boss is a duo of two {{Recurring Boss}}es, and the FinalBoss is a PaletteSwap of the fourth with the addition of an invincible companion. The first boss also comes in two.
* EverythingsBetterWithRainbows: Levels are connected by a Rainbow Transport.
* FlyingFace: The Skulls and Long Bones.
* FunWithAcronyms: Keith fights for N.I.C.E. (Nations of International Citizens for Earth) against B.A.D. (Beastly Alien Dudes).
* TheGoomba: Zakkos, frequently {{Palette Swap}}ped blobby little creatures that do nothing but walk.
* InconvenientlyPlacedConveyorBelt: Conveyor belts are all over the place in both parts of the last zone.
* LeapOfFaith: In the Underworld sections, constantly.
* LethalLavaLand: Fire Zone, the third level.
* LongSongShortScene: The Rainbow Transport music is quite a bit longer than what is heard in-game.
* MoneySpider: A lot of different creatures drop golden coins.
* PinataEnemy: The flying cats are the best resource for money grinding, especially given that killing sixteen of them will spawn a golden version with a more valuable drop.
* PoweredArmor: Keith's Nova Suit is depicted as this in the manual's comic, however, in the original anime, it was a HumongousMecha.
* RealSongThemeTune: The end credits theme is an electronic rendition of "Step", the anime's first opening theme.
* RecurringBoss: [[DegradedBoss The first boss later reappears as a mook,]] Stitch and Baron Chairman return as a DualBoss in Stage 5, and Mr. Roboto, ThatOneBoss, receives an upgraded PaletteSwap for the FinalBoss battle.
* RespawningEnemies: Enemies spawn continuously if you hold in one position, which is useful for money grinding on the overworld levels.
* SlippySlideyIceWorld: Glacier Zone, the fifth level.
* SpikesOfDoom: Touching spikes is [[OneHitKill instant death]] (same as a BottomlessPit), and since Keith only has one life, it's back to the beginning of the level (or game) if he dies.
* TraumaInn: There are hospitals in the overworlds where Nurse Nancy will heal your wounds for gold.
* UndergroundMonkey: The [[FinalBoss Titan Warrior]] is a golden version of Mr. Roboto.
* {{Wackyland}}: The Reverse Zone has upside-down pieces of ground in the air.
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