TANX is a pretty nice, compact Tanks game. It doesn't suck up all your memory, but isn't a skimpy program either. Firstly, I must rave about the very simple and easy to use interface. TANX has very easy menus with not much reading involved, and pretty simple key strokes.
I have a few minor dislikes, though. Primarily, it takes a long time to generate the terrain. It is worth the loading time , but just takes a little while. Also, sometimes the weapons seem a little unbalanced. Someone who wins the first battle generally should be able to win the rest because they can use all their extra money to pulverize the enemy.
However, there are several extremely well-done elements as well. First, there's the easy and simple way to play. Buy a few weapons, and load them up for a shootout. Switching weapons is very simple with a weapon selection menu, and there's no complicated angle measurements and stuff, just a little dot to point your shot. There are a few glitches, though. The round only explodes once the pixel is below ground. That means if it's falling really fast, it'll probably explode under the ground. Also, try setting your firing power to 0 and see what happens!
Overall, TANX is a very easy and simple game. It's nice, compact, quick, and still fun for that extra time during lunch.