How about a change of pace?
The Blue Planet RPG from Biohazard Games is a hard science fiction roleplaying game where you play adventurers on the colony Planet of Poseidon. Poseidon is a frontier world, and is an ocean world. You can play a regular human, a genetically or cybernetically modified human, a dolphin, or an orca.
A note of Caution:
Blue Planet is a game where people start at wildly different power levels. But the adventure possibilities are limitless. There was a GURPS port for Blue Planet, but I'd rather play with the original 2nd edition game.
The system is easy to learn, and the PDFs are pretty cheap. You only need the Blue Planet v2 Player's Guide to get started.
I'm a Traveller kind of guy but this looks interesting. I'd be willing to give it a go.
I guess no one else is interested. I could do with some science fiction games.