Hakoniwa Explorer Plus

You need to have a high tolerance for crass to enjoy Hakoniwa. This game is less "fan service" than it is an actual perversion, but if that kind of eyes-wide humour appeals to you then Hakoniwa is very, very funny. You'll probably only play it once because jokes are never as funny when repeated, but for that first run though, there's a sense of glory around the game; this thing offers a kind of joyous, unbounded creativity that it's impossible not to sit back and wonder at just what kind of process went into the making of it.