It may have taken Haemimont Games a good five tries to get Imperium Romanum right, but Grand Ages: Rome is probably the only truly competent Roman city builder currently extant---the use of RTS-style global resource gathering may not be terribly complex, but there's an elegant simplicity to it that makes the game more fun than frustrating, something the Caesar series never mastered.

A surprisingly good little trading sim, you could say it aims low and hits its mark. Not a lot of replay value here but fun if you can get it for under $15 or so.

Old World Blues does what The Pitt from Fallout 3 originally tried to---creates a great story with an industrial backdrop. Without spoiling too much, the way this story resolves will surprise you---like most of the writing in New Vegas, it rewards you to listen to the dialogue/read the subtitles and think about how you wish to proceed. Not bad for ten bucks.