The games you can select from are:
Darksiders – Steamworks
Batman Arkham City GOTY Edition – Non-Steam
IL-2 Cliffs of Dover – Steamworks
The Darkness II – Steamworks
Metro 2033 – Steamworks
Serious Sam: The Second Encounter HD – Steamworks
Honestly the choices are pretty bad. This would only be a good buy if you pick up at least Batman, Darkness II, or Cliffs of Dover. Serious Sam has been under $3 and Metro 2033 is on sale for $5 almost all the time.