This is a nice article to prove it can be done, but honestly I would rather setup a dedicated gaming rig. If you're serious about gaming you'll soon rack enough hours where your EC2 Spot costs exceed the initial investment in your own hardware.
Also the open UDP and TCP to 0.0.0.0/0 in the security group made me cringe. At least set it to your current IP /32 and perhaps set a script that watches your public IP and updates the SG automatically when it changes.
Also the open UDP and TCP to 0.0.0.0/0 in the security group made me cringe. At least set it to your current IP /32 and perhaps set a script that watches your public IP and updates the SG automatically when it changes.