Portal 2 pre-orders come with “custom bots”

Those who put down a pre-order for Valve’s Portal 2 at GameStop will be treated to “custom bots” for the mind-bender ‘s 2-player cooperative campaign as it releases next year, BigDownload‘s noticed.

What these bots are or what’s their benefit isn’t clarified on, but it is noted that they’re exclusive to GameStop. The retailer offers a $5 discount to those that pre-order as well.

The PC/Mac/PS3/360 game is out early next year, on February 9th.