quskevel,
Your gameserver.exe has less with 300KB than original. Your file is definitely altered.
Here are some technical information about original gameserver.exe:
So, we talk about possible Encrypted or Packed Executable, you can not have smaller exe file.TECHNICAL FILE INFORMATION :
File Type Description : Portable Executable (PE)
Entry Point RVA: 0C7B3D45h
Entry Point RAW: Invalid or not in CODE section (possible Encrypted or Packed Executable)





