Glitch Buster

Glitch Buster puts you inside a piece of software that's actively falling apart. Pointer glitches wander the level; jump on their heads or throw a breakpoint at them to clear 13 of them before the countdown runs out and the code collapses. It's a clean, funny premise for a js13k entry — the theme is a joke about software bugs, dressed up as an honest platformer — and js13kgames.com's own record confirms it landed: 2nd place out of 60 entries at js13k 2016, with judges independently calling it "very well implemented, very smooth and fluid" and "really fun."

The on-screen touch controls were tested, and they work

This shelf exists because platformers are usually the hardest genre to get right on a touchscreen — precise movement, a jump, and here, a ranged throw, all need distinct inputs a thumb can hit without covering the screen. Glitch Buster splits the screen into four tap zones (a strip each for move left, move right, throw a breakpoint and jump, plus a pause zone along the top), and this was tested directly rather than assumed from the source: a held touch on the right-hand zone visibly carried the character into a new section of the level, with the on-screen countdown timer advancing the whole time to confirm the game was actually running, not paused. The jump and throw zones were each triggered on their own afterward and produced the expected animation and effect. Desktop keyboard controls (arrow keys/WASD, held Space to throw) were confirmed the same way, with identical results.

One genuine wrinkle, and it's worth naming plainly because it cost real testing time to work out: the tutorial's dialogue boxes only advance when you tap directly on the character or text, not anywhere on the screen. Early testing kept holding the movement zones during the intro dialogue and saw nothing happen, which looked exactly like a broken control scheme until tapping the character itself moved the conversation forward. Once past the tutorial, the movement zones behave exactly as documented. It's a minor rough edge in an otherwise well-built touch layer, not a functional failure.

A theme that survives contact with the whole game

What elevates this past "competent platformer" is how far the joke goes. The title screen renders as visibly corrupted, glitching source code, with the menu options styled as function calls — .START(), .MUTE(), .HIRES? — instead of plain buttons. In-game text keeps the same voice ("This code is falling apart!", "You don't have any breakpoints"), and the whole visual language stays in grayscale, code-textured backgrounds that make the few solid white platform edges easy to read against the noise. None of this would matter if the platforming underneath were mushy, but it isn't: movement responds immediately to both touch and keyboard, and landing a jump on a glitch's head felt exactly as precise as the judges' "smooth and fluid" comment suggests.

It is, deliberately, a short game — 13 glitches and a clock, built for a competition weekend, not a long campaign. That's the right scope for what it is, and it doesn't pretend otherwise.

Final verdict

Glitch Buster earns its spot by doing the one thing this shelf checks for most carefully, and doing it well: a genuine multi-zone on-screen touch scheme for a precision platformer, tested directly and confirmed to move, jump, throw and pause correctly, with full keyboard parity on desktop. A confirmed 2nd-place finish against 59 other competition entries and a theme that carries all the way through the interface make this an easy recommendation despite the missing licence file and a tutorial that needs a more forgiving tap target. Recommended.