Gabe Newell - is a video game producer. Gabe Newell began his career in 1998 and has worked for companies such as Valve Software, Gearbox Software, Valve, Sierra On-Line, Sierra Entertainment, Sierra Online, NVIDIA Lightspeed Studios, Electronic Arts, Buka Entertainment, CyberFront, NVIDIA and Turtle Rock Studios. Gabe Newell's first game was Half-Life which was released 23 years ago. Best Game Gabe Newell contributed to was Half-Life. Gabe Newell's latest work is Dota Underlords which was released 2 years ago.