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On November 5, 2009, DICE announced a beta for Bad Company 2.Different game-related sites held contests to obtain beta codes. Retailers also gave beta codes to customers who pre-order the game. The PS3 version of the beta started on November 19,while the PC version was pushed back until February 2010 to increase the beta's capacity
Each public pre-release build of the game featured a map from the final product; the PlayStation 3, PC beta and Xbox 360 demo each feature the "Port Valdez" map. All versions only featured the "Rush" gameplay mode.

The online multiplayer demo for the Xbox 360 and the beta for the PC were released on January 28, 2010, and servers ran until February 25. The demo was released on the PlayStation 3 on February 4, 2010 in Europe and North America and February 11, 2010 in Asia.

GameZone's Dakota Grabowski interviewed Senior Producer Patrick Bach about the game. Following the negative feedback from PC gamers after the first Battlefield Bad Company was not released on the PC, Electronic Arts and DICE had a separate dedicated team working on the PC version. Bach stated "We see it as very, very hardcore and important part of our customers. So we put a lot of effort into making sure that everything worked perfect.” Bach also commented on the use of peripherals such as a mouse and keyboard on consoles, saying "I don’t think that we have any special connections to peripherals to the consoles … The biggest problem with peripherals for consoles is that the console itself is a level playground. It’s even and you know the consumer has the same technology and have the same peripherals and same controls – which makes it easier for us to create a game that feels fair. By catering to a mouse and keyboard for the consoles, it would maybe skew the even playground."