Tankgame

The object of tankgame in fullgame mode is to get to and complete the 13th level. 1 Player Fullgame sample instructions:
To move your tank forward hit the up arrow.
To move your tank backwards hit the down arrow.
To rotate your tank use the left or right arrows.
To make your tank auto-cruise, tap the up or down arrow 3 or more times.
To stop your tank during auto-cruise, hit the arrow key opposite that you are moving. You can toggle your current weapon to a reserve weapon if you have ammo for that weapon by pressing TAB.
Toggle the sound using the F1 button.
Quit Tankgame by pressing the ESC button.
Pause Tankgame by pressing the Pause button.
Run over the Power-up pills to gain extra weapons & armor.
Hints:
*Only a few computer tank types can go diagonally. Use this to your advantage.
*Don't waste newly aquired weapons if you don't need to. Toggle to your NORMAL projectiles for in close combat.
*Remember that you can only have up to 5 projectiles on the screen at once. So if you take some long shots, watch out for near tanks.
*To learn how to maneuver (drive) your tank better, play a DUEL by yourself and pick an obstacle filled board.

What is abandonware ?