Free Steam Game Code - Daily Riddle #2

Hello Steemians,

welcome to the daily riddle #2!
Solve the riddle and grab the random steam game code.

Rules:

• everyday a random Steam code is posted
• one digit is left blank (indicated by "?")
• if there are more than one "?" the digit is the same
• the blank digit is a number between 0-9
• guess the correct number first by activating it in your Steam account to get the free game
• post in the comments which game you won

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Today's code: IGZNG-Z2X?I-NQK0Z

Ps. Good luck and please upvote and share for support!