The best mechwarrior ever!!
The main strength of Mercenaries was not the gameplay (as awesome as taking control of a heavily armed mech is) but the story. At first all you are is another mech mercenary looking for work from the rival corporations that span the galaxy while slowly building up your finances and expanding your mech team. Then as the game continues towards the end you are unexpectedly thrown into a war between the now united corporations and the mysterious Clan, fighting to preserve the free galaxy.
No doubt fighting inside mech is a reward unto itself, with some of the best graphics I'd seen at the time you got to fight in a multitude of different environments; desert, snow, grass, at night (definitely a favourite) and even on an asteroid in space. Combine the graphics with the sounds of the weapons, mechanical screeching of the mech, the droning of the female computer when a critical system was damaged and a nice soundtrack, you'd quickly work yourself into a bloodlust!
Now put me in that Atlas and let's blast the Clan away!!!!