Apparently, preordering StarCraft II with GameStop snags you an invite to the game’s beta test, according to their website. The catch—you can’t cancel your order afterwards.

There are three ways to obtain a StarCraft II beta code through GameStop. You can preorder StarCraft II: Wings of Liberty online and receive your code through email, preoder the game for in-store pick-up, wait 24 hours, then go to the store for your code, or preorder the game in the store with the code printed on your receipt.

If you choose either of the first two options however, make sure you really want to purchase the full game, because there’s a disclaimer:

“Reserve StarCraft II: Wings of Liberty and receive an invitation to the StarCraft II: Wings of Liberty beta. Available online and in-store while supplies last. Once you receive your Beta Code your order cannot be canceled.”

Your best bet is to head on over to the store nearest you and drop $5 on the game. You’ll get the beta code, and should you not like the game that much, the retail store will allow you to cancel your order after the fact.