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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: Omega Factor Game Boy Advance Stage select
Astro Boy: Omega Factor Game Boy Advance Using the machine gun (in the bum?)
Astro Boy: Omega Factor Game Boy Advance This is what they get for fighting Astro Boy without listening to his explanation first! (As always)
Astro Boy: Omega Factor Game Boy Advance His father vowed to save him and make him better than before

Promo Images

There are no promo images for this game

Alternate Titles

  • "铁臂阿童木:Omega Factor" -- Chinese spelling (simplified)
  • "ASTRO BOY 鉄腕アトム ~アトムハートの秘密~" -- Japanese spelling
  • "Astro Boy Tetsuwan Atom: Atom Heart no Himitsu" -- Japanese title

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User Reviews

If you love Mega Man, you'll love this game! Blast Vortex (60) 4.5 Stars4.5 Stars4.5 Stars4.5 Stars4.5 Stars

Critic Reviews Jul, 2005 9 out of 10 90
NintendoWorldReport Sep 19, 2004 9 out of 10 90
GamePro (US) Aug 16, 2004 4.5 out of 5 90
IGN Aug 16, 2004 8.8 out of 10 88
Game Informer Magazine Aug, 2004 8.5 out of 10 85
Planet Mar 06, 2005 85 out of 100 85
IC-Games Mar 28, 2005 85 out of 100 85
1UP Aug 14, 2004 8.5 out of 10 85 Mar 10, 2005 8 out of 10 80
GamerDad Apr 18, 2005 4 Stars4 Stars4 Stars4 Stars4 Stars 80


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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

fushi (12) added Astro Boy: Omega Factor (Game Boy Advance) on May 08, 2005