Tank Battle

Aliens have taken over London!
You control a tank which moves around the city and destroys alien invaders.
Shoot from the cannon or machine gun. Enjoy the city views but be aware – the enemies can appear out of nowhere! Mop up the city of the evil aliens!
The game keeps on till your tank is alive. Kill as many aliens as you can. Hurry! The aliens are getting stronger. Do your best to destroy as many monsters as possible, but be careful.
Out of ammo? Don't worry! Just look for big box of ammunition standing somewhere on a street - and your tank is ready to shoot again!
Want to get more score? Look around: there is a number of strange extraterrestrial mechanisms. They are marked with yellow dots on your radar. Remaining scientists would generously reward you for delivering them. Just pick them up. But be assured that aliens certainly will not be happy with this act!
The best results will get into the high scores table!