Naked Order - girl gets blackmailed into running around town naked and doing lewd tasks like posing for a camera. RPG maker with 2D anime-style art.
Naked Adventure - western game inspired by Naked Order. I prefer the art-style in this one, and it's a bit easier, but has less content.
Flash Cycling - looks like the same kind of game but with a bicycle. I haven't played this one. Seems to have
a sequel.
Naked Story - guy wins bet against girl, forces her to sneak through town naked. This one has board-game and card-game features, so it's a bit unusual.