How Speedrunners Break Games (Without Actually Cheating)

Let’s dig into how speedrunners actually pull this off—and why it’s way more than “just playing fast.”

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1. Glitches Are Not Bugs to Speedrunners, They’re Shortcuts

Most players see a glitch and go, “Huh, that was weird.” Speedrunners see a glitch and go, “Bookmark this. This is content.”

Every game is basically a giant set of rules written in code. Glitches happen when those rules collide in ways the developers didn’t expect. Maybe collision detection freaks out, maybe an animation cancels another, maybe a loading zone gets confused—whatever it is, speedrunners treat those mistakes as tools.

You’ll see things like “clipping” through walls (where the game’s physics or collision doesn’t fully catch the player model), “out‑of‑bounds” movement (running around outside the normal map), or “wrong warps” (teleporting to places the game didn’t intend). None of this requires cheating software. It’s just players pushing the game into weird states using a controller and a lot of patience.

From a tech perspective, glitches are like a live demo of what happens when complex systems hit edge cases. The fun part: speedrunners go hunting for those edge cases on purpose.

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2. Frame-Perfect Inputs: Turning Human Hands into Debug Tools

Modern games run at 30, 60, or even more frames per second. A “frame” is just one tiny slice of time where the game reads your inputs and updates what’s happening.

Speedrunners obsess over this because some tricks only work on exact frames—literally 1/60th of a second windows. Hit jump one frame too late? No trick. Hit it on the exact frame? You just skipped half a level.

To find these sweet spots, runners will:

• Use slow‑motion or frame advance in practice tools (where allowed)
• Study video recordings frame by frame
• Map out precise button sequences (input “scripts” in their heads)

It turns players into semi‑human debuggers. They’re not reading the code, but they’re stress‑testing it with inhuman timing.

For people who like both tech and gaming, this is where it gets fascinating: it shows how sensitive real‑time systems are to tiny timing differences, and how predictable those tiny windows become once you understand the underlying update cycle.

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3. “Any%, 100%, Glitchless”: Speedruns Are Basically Self-Made Standards

Speedrunning looks wild from the outside, but internally it’s almost weirdly professional. The community creates its own rule sets, categories, and “standards” for what counts as a valid run.

Some common categories:

• **Any%** – Just finish the game. Doesn’t matter how incomplete or broken it looks. If the credits roll, it counts.
• **100%** – Get everything the game tracks: items, upgrades, missions, etc. The rules for “what counts” often involve serious debate.
• **Glitchless** – No major glitches allowed. You still go fast, but within the “intended” bounds.
• **Low%** – Beat the game with the fewest items or upgrades possible. It turns the game into a minimalist puzzle.

This is where the tech angle gets interesting: players are essentially reverse‑engineering design intent. They argue about what counts as a glitch vs. “clever use of mechanics,” then define formal categories around those interpretations.

It’s like watching a standards committee form around a single piece of software—except the committee is thousands of people on Twitch and Discord arguing about whether a wall‑clip is “too broken” for a certain category.

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4. Route Planning Is Half Math, Half Detective Work

Speedrunning isn’t just about mechanics; it’s about routing—choosing the fastest possible path through everything the game requires. That means:

• Deciding which items are actually time‑savers
• Figuring out which quests or bosses you can skip
• Using glitches to jump between areas that weren’t meant to connect

Runners will time almost everything: how long a cutscene takes, how long a menu animation lasts, how long it takes to move across certain terrain. All of that gets rolled into a “route,” which looks suspiciously like an optimized workflow.

Routing is basically a hands‑on lesson in optimization and systems thinking. You’re not just breaking games for fun; you’re building a perfectly tuned pipeline from “New Game” to “Credits.” And like any good tech project, routes constantly get refactored as new tricks are discovered.

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5. Community Tools Turn Casual Games into Open Research Projects

Behind the scenes, a lot of tech quietly powers speedrunning. Communities build and share tools that make the whole thing feel like an open research lab sitting on top of your favorite games.

Some examples:

• **Timers and split trackers** – Software like LiveSplit tracks your run down to milliseconds and compares every segment to your personal best.
• **Memory viewers and trainers** (for practice, not cheating in actual runs) – These let runners peek into what the game is storing in RAM: positions, health values, RNG states, and more.
• **Emulator features** – Tools like savestates and frame advance help runners practice impossible‑looking tricks until they become second nature on real hardware.
• **Data-mined wikis and docs** – For classic games, the community sometimes knows more about the engine’s internal rules than the original devs remember.

What emerges is a sort of grassroots R&D lab, where the “product” is simply: “How fast can we go?” It’s a live, player‑driven exploration of software behavior, system limits, and human coordination.

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Conclusion

Speedrunning looks like chaos, but underneath, it’s one of the most organized, tech‑nerdy subcultures in gaming. Runners are stress‑testing game engines, mapping weird edge cases, and building entire toolchains—just to shave off fractions of a second.

If you like both tech and games, speedrunning is basically your perfect rabbit hole: part performance art, part QA lab, part physics experiment, all running live on Twitch. Next time you see someone clip through a wall and land in the final boss room, just remember: that’s not cheating. That’s what happens when curious people poke at software long enough.

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Sources

• [Games Done Quick (GDQ) Official Site](https://gamesdonequick.com) - Major charity speedrunning marathon showcasing top runners and techniques
• [Speedrun.com](https://www.speedrun.com) - Central hub for speedrun leaderboards, categories, and community rules for thousands of games
• [“Glitches in Video Games: An Exploratory Classification” – DiGRA Conference Paper (PDF)](http://www.digra.org/wp-content/uploads/digital-library/10343.57171.pdf) - Academic look at different types of glitches and how they appear in games
• [LiveSplit Official Site](https://livesplit.org/) - Popular open-source timer tool widely used in the speedrunning community
• [Nintendo Developer Portal – Game Performance Overview](https://developer.nintendo.com/group/development/performance) - Background on frame rates and performance considerations that underpin many timing-based tricks