[InglewoodRoleplay]

Not much you can do about this, probably a bunch of script kiddies running a booter, best bet is placing the game-server behind some provider with actual DDoS protection such as OVH or Limestone Networks. Kimsufi which is a tier off OVH also has affordable VPS's. Other than that you can try an OVH reseller, which may or may not be more expensive since they need to make profit. There's also the option of putting your VPS behind some sort of GRE tunnel, there are a few providers around that offer this for an affordable price, only disadvantage is that client IPs may all be the same as their traffic is going through the tunnel and then to your server.