Underrun
Best for Players interested in small, atmospheric action experiments.
Desktop is the editorial recommendation. Entry/source documentation is not a gameplay test.
Project entry observed · Gameplay not independently verified
Opens the recorded third-party game entry in a new tab. You may still need to choose a mode, press Start or wait for a download. This directory does not host the game.
Developer-published project artwork; not a gameplay verification. Image source ↗
What does Players mean?
Players is a popularity-based editorial proxy, not live online players and not measured concurrency. Each entry uses its own recorded popularity evidence: observed GitHub stars or September 2026 Wikipedia pageviews for the original game. The two Q42 puzzles use their developer’s pageviews; projects for the same original game may share a value. We calculate round(sqrt(heat)); the result is neither active users nor unique players. Rounded GitHub displays are retained as observed. Sources and capture dates are available on each game’s detail page. Desktop is the default editorial recommendation when device support is unresolved; positive Mobile and Mobile + Desktop documentation is retained. No new physical-device gameplay test is implied.
Is Underrun for you?
Players interested in small, atmospheric action experiments. A compact twin-stick shooter built for the js13k competition.
What this browser project includes
Underrun is Dominic Szablewski’s 2018 js13k entry, implemented in JavaScript and WebGL. The project README describes a twin-stick shooter and MIT licensing, with a separate library notice. The recorded entry was at initialization, not a proven gameplay session.
Before you start
Game not loading? Use the safe troubleshooting guide before resetting anything.
Wait for initialization and follow the project’s displayed controls. A WebGL-capable browser is needed for the game’s renderer. JavaScript is required. Preserve any existing save before resetting site storage.
How to open this project
On the project site
Use Play to open the project’s own site in a new tab. Wait for initialization and follow the project’s displayed controls. A WebGL-capable browser is needed for the game’s renderer.
What to try instead
- BO1 Zombies — A high-round Black Ops Zombies challenge with large waves and no perk machines.
- Moon Zombies — A Moon-themed Black Ops Zombies project with a solo-survival menu.
Source and project links
Popularity reference: Project GitHub stars ↗. Observed GitHub repository stars; rounded display values retained as observed, not users. Heat: 1100; captured 2026-10-10. Formula: round(sqrt(heat)).
Notes describe recorded project evidence, not a promise that every mode or device works. Original cover art does not establish the browser project’s content.