Blur an arcade style racing game released by Activision, developed by 
Bizarre Creations has score some good reviews and in my opinion, the game is must try. Anyway another new multiplayer game and here we are again writing another Hamachi Guide. Blur was mostly bug free but people have been facing issues in order to play it on a virtual network via Hamachi. So here are few instructions that will help you play Blur online on Hamachi.
Step 1
Uninstall old version of Hamachi and Install the new Blur supported version of Hamachi. Make sure everyone of your friends has the same this version of Hamachi before you continue.
Step 2
Reconfigure your Network Connection to make it detect Hamachi first.
Step 3
For XP Users
Go to All Programs > Accessories > Communications > Network Connections. Go to the menu > Advanced > Advanced Settings. Now under Adapters and Bindings tab, move Hamachi to the top of the list.
Restart your PC.
For Vista/Win7 Users
Go to Start menu > Network, click on the Network and Sharing Center button at the top. Click on “Manage Network Connections” on the left hand side and then go to Advanced > Advanced Settings. Under the Adapters and Bindings tab, move Hamachi to the top of the list.
Restart your PC.
Step 4
XP Users
Go to Local Area Networks, right click on Hamachi, and open its Properties. In properties select TCP/IPv4, and click on Properties tab below. In the properties windows, click on Advanced tab at the bottom of the window, Now in IP Settings tab, go to the bottom and add 10 in “Interface Metric”.
Vista/Win7 Users
Go to Network and Sharing Center, on the right side, click on Adapter Settings, here you will find the Hamachi Network. Right click on it to proceed to its properties, in its properties select TCP/IPv4 and go to its properties, there click on Advanced tab at the bottom and move on its advanced settings. In IP Settings tab of advanced settings of TCP/IPv4, go to the bottom of the window, and add “10″ in “Interface Metric”.
Step 5
Create a network, tell your friends to join the same network.
Step 6
Host a Blur LAN game and your friends will be able to join that game.
Have Fun.
Tyvm, works great ;D