It costs Approximately $10 whereas GTA San Andreas Costs $20, Cheaper isn't it ?
Unlike other parts of GTA games this has got in build Multiplayer System !
Its a Game with cool Graphics, u need to have a graphic card to run it !
Map is bigger than other GTA games
System Requirements are as follow:
Minimum System Requirements
Operating System: Windows Vista Service Pack 1 OR Windows XP Service Pack 3
Processor: Intel Core 2 Duo 1.8Ghz or AMD Athlon X2 64 2.4GHz
Memory/RAM: 1.5GB for Vista, 1GB for XP
Hard Disk Space: 16GB Free
Video Card: 256MB NVIDIA 7900 or 256MB ATI X1900
Recommended System Requirements
Operating System: Windows Vista Service Pack 1 OR Windows XP Service Pack 3
Processor: Intel Core 2 Quad 2.4GHz, AMD Phenom X3 2.1GHz
Memory/RAM: 2.5GB for Vista, 2.5GB for XP
Hard Disk Space: 18 GB Free
Video Card: 512MB NVIDIA 8600 or 512MB ATI 3870
Check This For Details
http://en.wikipedia.org/wiki/Grand_Theft_Auto_IV
The Draw back is u need to have a High Performance PC to run it ![not drawback exactly]
