Okay, you don't seem to be clear on the concept here.
This is a web host. That means they host websites. HTML is fine. PHP is fine. CGI is fine.
Executables for other servers are not fine.
Even if you get a full gameserver installed in your account's space, you won't be able to launch it. Security measures are in place to keep you from using executables.
Even if you find a way around that, you will be suspended for excessive resource usage, suspended for misuse of your account, or the server will be inaccessible because the server firewall will block connections to it.
You can't run game servers on free webhosts. You can't run game servers on webhosts at all. Find a VPS or a dedicated server host somewhere.
If someone's already running one of these servers at x10, they aren't running it on free webhosting. x10 also offers VPS hosting, and you can probably run a game server there.