What Is Run 3 Unblocked? Run 3 Unblocked is a popular online flash game that is part of the "Run" series developed by Joseph Cloutier (also known as Player 03). The game is often referred to as simply Run 3. In this game, players control a character who is running through a futuristic and minimalist 3D space environment filled with various obstacles and platforms. The objective of the game is to guide the character safely through