Game Courier supports many different games. Here is one picked at random:
Save the Standard -

Foreign Policy Chess

If you had a Java-capable browser, you could play Foreign Policy Chess here.
Keys "s"=save "l"=load "b"=back once

Francois Tremblay's variant, in which he makes fun of international interventionism. The peacekeepers win only by capturing both kings. If the peacekeeper captures one foreign king, and the other foreign power captures the peacekeeper king, it's a draw. The peacekeeper pawns cannot doublemove or promote to queens.

Chess Variants