Run 3 is a tunnel runner-platformer by Joseph Cloutier built around gravity shifts, route planning, and precision jumps. It is not just an endless runner. It is a spatial platform game where wall orientation and lane choices are core decisions.
Major portal documentation describes two key modes: Explore Mode and Infinite Mode. Explore Mode progresses through designed tunnel challenges, while Infinite Mode emphasizes endurance and power-cell collection. Character abilities also influence how certain sections are best approached.

The biggest difference from normal runners is perspective control. You can rotate to different tunnel surfaces, effectively changing what counts as floor. This creates puzzle-like routing choices on top of reaction gameplay.
Do not look only at your current landing. Scan two to three platforms ahead and decide which surface gives the cleanest next sequence. Good players think in short routes, not isolated jumps.
