There are three bundles available. There are too many games to list descriptions of but the bundles are worth it. The games are DRM free too which means you can install them as many times as you like on your computers without hassle.
The first two bundles cost $20 each (less than £13) and the final bundle is the first two bundles for $30 (less than £20).
The first bundle contains 'AaaaAAAaaaA!!!', 'Brainpipe', 'Captain Forever', 'Cogs', 'Saira' and 'Space Giraffe'.
The second bundle contains 'And Yet It Moves', 'Auditorium', 'Aztaka', 'Eufloria', 'Osmosis' and 'Machinarium'.