The rest of the three bundles are for all you Xbox 360 and PlayStation 3 owners. The 2K Essentials Collection includes BioShock, Borderlands, and XCOM: Enemy Unknown. The 2K Power Pack includes BioShock 2, The Darkness II, and Mafia II. Lastly, there's the Rogues and Outlaws Collections that bundles Borderlands 2, Spec Ops: The Line, and Mafia II.
All four bundles are going for $29.99 and you can get them from retailers such as Walmart, Amazon, GameStop, and Best Buy.