You can't run a game server on a VPS, unless It's an OLD game (2000 or before), or something simple like text based/2D, you'll need a dedicated server.

Also if you, or most of your customers will be in the US, you need to look into a host in the US, or Canada would probably be better for that if you're running a cracked/"private" game server, anywhere in Europe though, unless most of your players are in EU/US/CAN east coast, they will have a high ping and lag, and Asia is just a pretty much complete no go if your players are anywhere in Europe or North America.