Global Defence force
This has been hinted at in other threads, but needs a thread of it's own!
One of the best budget games on PS2 - limited release so quite a bargain. Go for £9.99 on ebay.
* The GDF troops must discover the source of the invasion and exterminate the threat!
* Use tanks, choppers, bikes and many other war machines to help you defeat the invaders.
* 140 different weapons!
* Team up with a friend in a split-screen mode featuring either Co-Op Move or VS. Mode.
Cheapest £9.99 at Play