PC Games – Those not need extra graphics card

Please suggest me which are the must play games, runs on PC without go for upgrading PC.
MY PC SPEC AS FOLLOWS:
Core2Duo Processor
2 GB RAM
160 GB Hard disc
DG31GL Motherboard
Thanks in advance
Answer #1
You need to provide more info.
Firstly, there are no must play games. You decide what kind of games you like and I can suggest you some similar games. You need to provide your PC Specs and what OS you are using.
Answer #2
At least give us your current PC spec.
You’re going to have quite a lot of trouble playing games if your PC looks like this.

Unless you want to play PONG – and still, you’ll probably be pushing it. lol
Come on man, give us more info.
Answer #3
give us the specs… then we decide and suggest