| 1 | What is Valve's Top Selling Game? |
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| 2 | What is the name of Valve's FTP game that has multiple classes? |
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| 3 | What is the name of the robot that tests you in Portal and Portal 2? |
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| 4 | What is the name of the character you be in the Half Life Series? |
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| 5 | What are the teams called in Counter Strike: Source? |
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