I used EtherDetect to see what is one game sending to me and what I'm sending to game server. I was wondering what encryption is it after the packet information which is colored in grey color in the image bellow. How can I encrypt/decrypt information which I'm sending/receiving in my games like this?
Why do you think this data is encrypted? This could also be simple binary encoded data, but as long as you don't know the data format this remains a secret.