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4/5 (52 votes)

Petri Lab

One of the greatest miracles in modern medicine is happening right before our eyes: Germs are finally learning to play by the rules! However, they follow those rules to a T (cell?), so you've got to figure out how to rearrange the germs in the Petri Lab, a rule-rearranging logic puzzler by Grace Avery. Transform the germs in the Petri dish to match the target at the top by activating the germs' specific rulesets.

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10 Comments

I did great until level 25... Anyone else playing?

This game won't load for me. Tried it in IE and Chrome.

[Should be working now. -Jay]

I'm using IE9 and it works for me, although I'm not sure whether that's helpful.

One thing I missed that's helpful to know is that purple germs will disappear (or delete themselves, if you prefer) if you move them when they're at the end of the line.

@Opal - that's probably it. I'm IE8 and cannot upgrade to 9 unless I buy a new PC.

Well - just tried for the sixth time and by golly it loaded. POP

I'm stumped on level 19.

POP. :) Got 19 after all.

I got #25

Step-by-step follows:

Click green twice.

Click the four reds.

Click the purple.

Click the purple again.

Click the two yellows.

Click the purple.

Now I'm wrestling with #29.

^ Scroll Up | Homepage >

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