The XBox has some fantastic games, and you really should mod it and add a larger hard drive, as then you can run emulators and game ports too, and install and run *everything* from hard drive.
Anyway, recommended games:
First person shooters:
Unreal Championship 2 (very different and far, far better than UC1, which is just a cut down version of the PC's Unreal Tournament 2003),
Timesplitters 3: Future Perfect (utterly superb),
Chronicles of Riddick,
Deus Ex: Invisible War,
Doom 3: RoE
The Suffering: Ties that Bind,
third person shooters:
Conker: Live and Reloaded (not nearly as good as the N64 orignal, but well worth getting if you can't get the N64 version),
Prince of Persia: Sands of Time,
Knights of the Old Republic,
Knights of the Old Republic 2,
GTA3: San Andreas (the best GTA game ever, I think),
GTA3: Vice City,
also, if your XBox is modded, then you can run brilliant ports of Doom 1, Doom 2, Duke Nukem 3D, Shadow Warrior, and Alien vs Predator. There are also ports of othetr games, which are supposed to be good, but I don't like them so I can't really comment on them, such as Quake 1 and 2, Descent 1 and 2, and Rise of the triad. Plus you can get great emulators for almost every pre-XBox system, so you can run their games on your XBox. See the FAQs on this site for details.
QUOTE(ledzepploid @ Jan 7 2011, 06:14 PM)
Yep it's just an Xbox1 I have. I may buy a second hand 360, but in about 3 years time when its games are cheap. I don't mind being a few years behind, because paying £40 for a game is just ridiculous. I don't remember new N64 or Dreamcast games being that expensive on release.
I bought an xbox and 10 games for £30 from my local games shop. Also been on ebay and grabbed san andreas, project gotham racing 2 and Soul Calibur 2 for £14.
There's nothing "just" about owning an XBox 1! I have a 360 and it's great (I'm currently playing Singularity, a very under-rated first person shooter), but I much prefer the XBox 1, both for it's games, and also the stuff you can do with the XBox 1 when it's modded. The XBox 1 is my media player, and also has all my emulators on it.
If I could only have one XBox, it would be the first one, not the 360.
Anyway, congratulation on your purchase. You have many superb games to find, and if you like first person shooters then you're especially in for a treat, although the XBox is great for most genres, and is a very reliable machine. The only likely problem with it is the DVD drive, which wear out with use, but if you mod the machine and add a large hard drive (I have a 500GB), which are very cheap now, then you can install all of your games to the hard drive, and run them from there. This saves wear and tear on the DVD drive, stops all loading errors, and makes loading much faster and quieter. Plus you can then store your game discs somewhere safe (where the kids can't get them), as you don't need them again.