
On May 18th, 2020, a group of speedrunners came together to create a build that would change the face of speedrunning forever. The "speedrunners build 18052020" refers to a specific configuration of game modifications, software, and techniques that allowed speedrunners to optimize their runs and push the limits of what was thought possible. In this article, we'll dive into the details of this build, its impact on the speedrunning community, and what made it so special.
: The core acceleration mechanic utilizes pendulum physics. Hooking onto a ceiling ceiling transfers downward velocity into forward kinetic energy.
To prevent Steam from forcing an update:
Corrected a bug that prevented ranked points from updating instantly after a match. speedrunners build 18052020
Pushes away nearby players and destroys incoming projectiles.
To master this build, you need to understand the fundamental controls and movement tech: Arrow Keys to run and the Down Arrow to jump. Timing is critical to maintain momentum.
This article serves as the definitive archive and technical guide for the version designated —the final "golden age" build before fundamental physics changes altered the competitive landscape forever. On May 18th, 2020, a group of speedrunners
: The real enemy isn't the other players; it's the screen edge. As the lead runner pulls ahead, the camera frame shifts, forcing trailing players into a shrinking zone where a single mistake results in instant elimination. Critical Updates and Meta Changes in Build 18052020
: Speedrunners often rely on "sub-frame" timing for movement like "wall-runs" or "crouch-jumps." This feature would allow runners to "buffer" an input within a 2-3 frame window before a physical collision or sector change, ensuring the engine registers the maximum possible velocity boost without frame-perfect manual precision. Live Momentum Gauge
. Unlike the standard Steam releases, this version was reportedly a "test-bed" for a cancelled Teamplay update The Legend of the Ghost Runner The Glitch : The core acceleration mechanic utilizes pendulum physics
Access to over 50 unlockable characters, including favorites like Unic and Sherlock Bones.
As of 2025, there are approximately 200-300 active players on the build during peak hours. Tournaments still offer cash prizes for "Old Physics" categories.
Note: If this manifest ID no longer works due to Steam deprecation, the fallback ID is 5832626805688432155 (the May 19 hotfix, which is identical in physics).
SpeedRunners is a fast-paced game where a few milliseconds of lag can cause a player to get caught by the screen border and eliminated. Before May 2020, the peer-to-peer networking system often caused desynchronization. Players would see themselves ahead on their own screens, only to be suddenly pulled back due to a server correction.