Just found out about this. I already got the game, so I haven't checked the download. But as this is my favorite of the entire Mech Warrior series, it's a must own. ;)
Tsk tsk tsk... you need to be more prepared. What're the Mech Warrior games about? I've never heard of them nor have I ever played them lol. I assume it's giant robots fighting each other?
You go through a huge campaign, where, as you put it, it's giant robots fighting each other. (Really tears down the quality when you put it that way, lol.) You're allowed to customize your mech in so many ways - you like this certain gun? Why not have two of them! Granted the graphics aren't up to par anymore, but you got to consider that the game was made exactly a decade ago.
Either way, as I said above, it's a small download. I've got the original and both expansions for it - it's worth the money to pay for, and getting it free is one great deal.