I can't stop playing Harem Collector lately (free hentai RPG for PCs).....I'd seriously recommend it to anyone who likes RPGs and BDSM scenes mixed in with a little bit of 'siscon'
I can't say I've finished it, as the game's at least a few more updates away from being done, but I've gotten as far as you can get, several times actually. The next update is coming up in like 2 weeks, I think...and there's gonna be at least one girl to add to the hero's harem (his goal is to get 151 girls! Somehow the number is a Pokemon reference, I think)