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

French, 1993. Get your units to the opposite side to score points. K=30, P=6, N=5, B=4, R=3, Q=2. When only one player has units left on the board, those units are added to the score. You must avoid/escape check if possible. If you still have no move, all your remaining pieces are removed.

Chess Variants

Meet Ed

These are simple illustrations rather than strong opponents.

Bug reports? -- Thank you! Keep them coming!