Mentalepsy: New titles of note:
Disciples and Disciples 2 - I've only played the first one briefly, but it seemed pretty solid, and they have a strong reputation. For some reason, buying them separately appears to be cheaper than buying them together in the Platinum collection.
Elven Legacy Collection - great turn-based tactical fun, though not very forgiving. $9 gets you quite a lot of content here. Recommended.
King's Bounty Crossworlds - in case you've got Armored Princess, but not the expansion. I haven't played the expansion itself yet, but I'm sure it's lovely. Includes a level editor, though whether the community has actually made use of it or not, I don't know.
Stalker: Call of Pripyat (Loyalty Edition) - This requires you to have one of the other two Stalker games installed. I can confirm that it works with the Shadow retail box. Haven't played it yet, but Shadow was spiffy but Pripyat is supposedly better.
Sword of the Stars Complete - a great little stripped-down 4X focused mostly on combat and conquest. Very refreshing, if that's what you're looking for.
Call of Pripyat is miles better than the other two. You'll have a great time with it! =)