"Essentially, due to THQ's current financial situation and uncertainty of delivery, in order to protect our consumers we removed the ability to pre-purchase that specific game," GameStop vice president of public and investor relations Matt Hodges told GameSpot, referring to Metro.
Bids for the now bankrupt THQ's assets are due January 22. Either the company will be purchased outright, or its assets will be auctioned starting January 23.
Pre-orders of physical versions of Metro and other THQ games, for PC, PS3, and Xbox 360, remain active on GameStop.com. The removal currently only applies to PC downloads.