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It's your job to clean up a microbe-infested world (pictures)

Stay Alight! has a gloriously grimy theme as you fire projectiles to clean out all the monster microbes.

Jason Parker
Jason Parker has been at CNET for nearly 15 years. He is the senior editor in charge of iOS software and has become an expert reviewer of the software that runs on each new Apple device. He now spends most of his time covering Apple iOS releases and third-party apps.
Jason Parker
ItsADirtyWorldClean.jpg
1 of 5 Screenshot by Jason Parker/CNET

Destroy the monster microbes

Play as Mr. Bulb and fire your projectiles to destroy the monster microbes in a grimy world.
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2 of 5 Screenshot by Jason Parker/CNET

Get 3-star ratings

Try to get the most stars possible in each level so you can unlock new worlds.
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3 of 5 Screenshot by Jason Parker/CNET

Trick shots

The perfect shot on top of this level is to bounce the projectile and hit each monster microbe.
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4 of 5 Screenshot by Jason Parker/CNET

Complex levels

Some levels like this one require that you unleash the spiked barrels at the top to kill the monster microbes on the bottom.
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5 of 5 Screenshot by Jason Parker/CNET

Mysterious puzzle

As you play, you'll find puzzle pieces that add to a mysterious puzzle you can view from the main menu. There's little in the way of explanation for what it all means.

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