Steffan O'Sullivan (FUDGE) offers Beaufort, a sub-system for dealing with ships in storms. Interesting but quite niche.

Jackson Tegu has Dial, a game about creativity where you play yourself but in possession of an object that can inspire another person's creativity and then explore what you do with it. This a premise without a game or any support for the players so its outcome is going to entirely depend on who you play it with.