If you ever start up a game, post the Game Password here... "phins" will be my standard game password whenever I'm on... ...and if you like the "old school" version, check this out: http://www.scorched3d.co.uk/
I don't know if its the same game but back in 96-97 we had this black and white Compaq computer which had a tank game but required a password to play it. wow so many hours wasted playing that game hitting Tab brought up all the weapons which I believe were over 50. This game is the closest Ive seen resembling it.
Death Tank The original Death Tank was a bonus game in the Sega Saturn version of PowerSlave. Its sequel/update was Death Tank Zwei, hidden in the Sega Saturn version of Duke Nukem 3D. Death Tank and Death Tank Zwei were developed by Ezra Dreisbach for Lobotomy Software. Dreisbach now works for Snowblind Studios and is now making a standalone version of the game for Xbox Live Arcade.