Tanx

Tanx expands the gameplay of the old arcade game Tanks. Two human players
do battle over a randomly generated terrain, each of them in control of a
tank. Taking it in turns, you must fire a shot of the correct weight and angle
to hit your opponent’s tank and destroy it.

You can configure the game to vary the strength of the wind, the effect of
gravity, and the gradient of the terrain. Special features such as pushers and
pullers, which redirect shots up and down when interfered with, can be turned
on or off.

A special feature is the Free Shot target, hitting which gives you two
consecutive shots on your next go, allowing you to fine-tune a second shot if
your first misses fractionally.