On the surface, it looks like a technical error—a rogue string of numbers that escaped a database. To the uninitiated, it might seem like a software version or a forgotten patch note. But within dedicated speedrunning communities, particularly those centered around indie platformers and early-access titles, this specific build number has taken on an almost mythical status.
This article dives deep into the origin, the glitches, the controversy, and the lasting legacy of one of the most debated build numbers in recent speedrunning history. First, a crucial clarification: "Speedrunners build 18052020" does not refer to an official version of the popular multiplayer game SpeedRunners . The naming convention (DDMMYYYY format) is a dead giveaway. The date "18/05/2020" (May 18th, 2020) does not align with any major patch for the commercial title SpeedRunners , which had left early access years earlier, in 2016.
The answer lies in . Mainstream speedrunning involves memorizing levels and executing precise inputs. Build 18052020 is more like a sport. It presents a sandbox with a single rule: go as fast as possible. speedrunners build 18052020
It is the speedrunning equivalent of a skatepark designed by skateboarders for skateboarders. Every ramp, every rail, every flaw exists to enable a new trick.
The build number 18052020 was originally a timestamp left in the source code by an anonymous developer (known only as V0idStrider ) who created a custom engine demo for a speedrunning competition on the now-defunct EnGaming forums. The challenge was simple: build a 2D movement sandbox where top speed was limited only by the player’s input precision. Unlike the official SpeedRunners game, which balances competitive play with items and stage hazards, build 18052020 strips everything away. It is raw, unadulterated momentum. Here are the core features that define this mysterious build: 1. Infinite Momentum Stacking In most platformers, there is a terminal velocity. In build 18052020, there is none. By chaining a specific sequence of wall-jumps, slides, and grapple-cancels (a technique known as the Phantom Boost ), players can accelerate indefinitely. Speedrunners have recorded speeds exceeding 10,000 units per second—at which point the screen becomes a blur of color. 2. Sub-Pixel Broken Collision The build’s geometry engine was intentionally flawed. Due to a rounding error in the collision detection (attributed to the build’s hasty 48-hour development period), players who move faster than 800 units per second can actually phase through thin walls. This turned any level into a non-linear web of potential "out-of-bounds" skips. 3. The "Frame 180" Glitch The most famous exploit in the build occurs exactly 180 frames (3 seconds at 60 FPS) after a slide-jump. If a player inputs a grapple command on the exact frame the slide animation ends, the game fails to reset the vertical velocity. This allows runners to "fly" horizontally for the rest of the level without touching the ground. 4. No Anti-Cheat Because this is a custom, offline build, there are no anti-tamper measures. But that’s not the appeal. The appeal is that the build was locked—no updates, no patches, no rebalancing. The version you downloaded on May 18th, 2020, is the exact same version everyone runs today. This creates a perfectly static environment for competition. Why the "Build 18052020" Community Exists You might ask: If this isn’t a real game, why do people compete on it? On the surface, it looks like a technical
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Build 18052020 has inspired modern games like Aerial_Knight’s Never Yield and Spark the Electric Jester 3 , both of which include explicit "momentum mode" options as an homage to the glitch-riding chaos of that lost May build. Speedrunners build 18052020 is, objectively, a broken piece of software. It crashes if you open the menu too fast. It has no sound. The textures are programmer art. And its legality is dubious at best. This article dives deep into the origin, the
But for a small, passionate group of speedrunners, it is also a masterpiece of emergent gameplay. It captures the purest form of the speedrunning spirit: take a system, find its limits, and then break through them.