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Astro Boy: Omega Factor

aka: Astro Boy Tetsuwan Atom: Atom Heart no Himitsu
Moby ID: 17646
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Description official descriptions

Astro Boy: Omega Factor is a side-scrolling action game based off a 2003 remake of Osamu Tezuka's classic Astro Boy anime and manga series from the 1960s. You play as the young, boylike robot Astro Boy, a true mechanical pacifist who's biggest dream is that one day humans and robots can coexist in peace. Armed with a strong punch, rocket powered feet and the ability to shoot laserbeams from your fingers, arms and behind, you set off on a quest against all sorts of evildoers from the Astro Boy series.

The game has two distinctive types of levels: the more prevalent beat-em-up levels and the shooter-esque levels. During the beat-em-up levels you can walk around freely and your flying ability is limited to short bursts. The shooter levels differ from each other: sometimes you can float around the screen and shoot in both directions, other times you are flying in a set direction in a more on-the-rails fashion.

The Omega Factor mentioned in the title is actually a simple upgrading system for your weapons. Every time Astro meets someone new (be they good or bad) he or she will be added to the Omega factor screen and Astro can upgrade one of his six weapons or abilities.


  • ASTRO BOY 鉄腕アトム ~アトムハートの秘密~ - Japanese spelling
  • 铁臂阿童木:Omega Factor - Simplified Chinese spelling

Groups +


Credits (Game Boy Advance version)

45 People (34 developers, 11 thanks) · View all

Executive Producer
Game & Visual Concept
Main Programmer
Game Design
Main Designer
Game Supervisor
Sound Effects
Special Thanks to
Based on the Story by
Director of Product Development
[ full credits ]



Average score: 85% (based on 41 ratings)


Average score: 4.2 out of 5 (based on 21 ratings with 1 reviews)

If you love Mega Man, you'll love this game!

The Good
I love everything about this game! Seriously, what's there not too like here. Catchy music, infectious gameplay, and sweet bosses! It's literally got everything you could want from an action game!

Considering this was co-developed by Treasure, I'm not surprised. This game is top-notch all the way!

The Bad
I'd say that the only drawback is that in order to finish the entire story, you essentially do have to play through the game twice. Of course, I can't completely say why you do or else I'd be spoiling it for you.

At times, the game seems to borrow quite heavily from the Mega Man series, despite that the implementation of certain abilities is definitely unique even if they feel similar. Heck, Astro Boy even blinks the same way that Mega Man does. But of course, that isn't really a bad thing.

The Bottom Line
Gameplay: Well, like I said before, this replicates Mega Man pretty well, but the overall feel is in keeping with such Treasure classics as Gunstar Heroes.

Presentation: Crisp, vibrant graphics reminiscent of both the more recent Astro Boy anime as well as the Super Nintendo era.

Music: Catchy, upbeat, and infectious. An excellent score, to be sure.

Difficulty: Easy and yet moderately challenging for the earliest difficulty. Normal Mode can give you a run for your money, but the Hard Mode is enough to fray anybody's nerves (gaming zen required). Truly a well balanced game.

Game Boy Advance · by Blast Vortex (45) · 2007


1001 Video Games

Astro Boy: Omega Factor appears in the book 1001 Video Games You Must Play Before You Die by General Editor Tony Mott.

Version differences

The original Japanese version is easier and has more slowdowns than the US version. The US version also has a few new enemies.


  • GameSpy
    • 2004 – #2 GBA Game of the Year


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Identifiers +

  • MobyGames ID: 17646
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Contributors to this Entry

Game added by fushi.

Additional contributors: Unicorn Lynx, monkeyislandgirl, Игги Друге, Patrick Bregger, FatherJack.

Game added May 8, 2005. Last modified August 2, 2023.