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The Commander Keen Quiz

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What is Commander Keen's real name?
Who is Keen's arch enemy?
In Keen 5, what is the name of level 8?
How many points is a Vorta-Cola worth in Keen 2?
How many shots does it take to defeat a Vorti-Ninja?
What does this sign say?
What is the name of the babysitter kidnapped in Keen 6?
F10 and what letter activates jump mode in Keens 4-6 and Dreams?
The secret level in Keen 4 is called the Pyramid of the ...?
What is the name of the Grand Intellect's machine?