Jess Cliffe - is a video game designer. Jess Cliffe began his career in 2000 and has worked for companies such as Valve Software, Barking Dog Studios, Valve, Sierra On-Line, Nexon and Nexon Europe. Jess Cliffe's first game was Counter-Strike which was released 20 years ago. Best Game Jess Cliffe contributed to was Counter-Strike. Jess Cliffe's latest work is Counter-Strike Nexon: Zombies which was released 6 years ago.