Recently I played Mutant Minx Meltdown. It’s a pretty entertaining freeware erotic RPG (for Windows, Mac and Linux) aimed at straight men. You explore a locale infested with monstergirls and lust-crazed women, most of whom are illustrated. It hews closely to RPG conventions (random battles, attack/special move/wait combat and so on), and while the combat is fairly perfunctory, at least it doesn’t overstay its welcome.
Too many porn games get bogged down in their own lore, but it doesn’t take itself too seriously, which is a refreshing change. For instance, the Attack button is labelled ‘Shove’ and you can upgrade it to ‘Lightning Shove’. It’s good to know I’m not hurting all those over-friendly nymphos.