Purchasing the game from the official Lego website grants access to an unnamed exclusive character and stud code. However, currently the limited Lex Luthor edition is not available through the official website.
A limited edition version of the game is available at retail, and from sites such as Amazon.co.uk in the UK. This version includes an exclusive Lex Luthor mini toy. This collectible character is not available in any Lego sets.
Users with 3D capable Nvidia graphics cards may be unable to disable 3D Vision by unplugging the 3D adapter, or using the Nvidia Control Panel. This issue can be resolved by pressing Ctrl+T in-game.
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Warner Bros. Interactive Entertainment\LEGOBatman2
A number of users have reported issues with the PC version of the game, whereby the anti-virus program AVG detects the dangerous Win32/Heur virus mid-installation. This is a known false-positive, and AVG are aware of the issue. Users of AVG can safely ignore the warning presented in this case.