here is my little unfinished spacewar game whose keyboard controls don't work properly if two players play seriously. but it's fun to destroy your own torpedos with the laser! it does almost look like the original dos version...

keys are:
player1:
(on keypad)
1 - shift energy
2 - cloak
3 - shift energy
4 - rotate left
5 - thrust
6 - rotate right
7 - torpedo
8 - hyperspace
9 - laser

player2:
y - shift energy
x - cloak
c - shift energy
a - rotate left
s - thrust
d - rotate right
q - torpedo
w - hyperspace
e - laser

f4 - toggle planet/gravity