I'm pretty sure they have made some great versions of those games now for the PS3. Pretty sure there's a Diablo and a Civilization game. I don't play those games so I can't say for sure. But one of the great things about the PS3 having been around for a while is that so many great games have either been ported for the PS3 or directly build from the ground up specifically for it. I always look up games here:
http://www.gamefaqs.com/ps3
so, for example, here's all the PS3 role playing games:
http://www.gamefaqs.com/ps3/list-48
and here's all the PS3 strategy games:
http://www.gamefaqs.com/ps3/list-45
I enjoy reading reviews here: http://www.ign.com/ps3 because they have video reviews for lots of games! Also, for overall critics scores I like looking here at metacritic, which combines all the reviews in one handy place: http://www.metacritic.com/browse/games/release-date/available/ps3/name
I like reading & talking about and watching videos of games almost as much as playing them. So, let us know what game(s) you choose. I'm always interested. Happy gaming!