phoboslab/underrun
Twin stick shooter game in 13kb of JavaScript/WebGL observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2912
- days_rel: n/a
- days_push: 1680
- n_releases_24m: 0
Adoption not part of the score
1108 stars · 114 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Underrun is a twin-stick shooter game written in 13kb of JavaScript using WebGL, created as an entry for the 2018 js13k competition. It is a complete, playable browser game released under the MIT license.
Use cases
- play a small browser-based twin-stick shooter game
- study how a full game fits into 13kb of JavaScript
- learn WebGL game rendering techniques
- explore js13k competition entries
- use as a starting point for tiny browser games
When to choose
- you want a lightweight game that runs directly in the browser
- you are studying size-constrained (js13k) game development
- you want a compact WebGL code example
When to avoid
- you need a full-featured game engine or extensible game framework
- you need long-term maintained or updated game code
- you need a native desktop or mobile game
Facets
application · maturity maintenance
game-engine graphics gaming-tools web-development browser js13k twin-stick-shooter webgl size-coding javascript-game game-development web-server
1 source
- readme: https://github.com/phoboslab/underrun · fetched 2026-08-28 · 35599b214cfb
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| phoboslab/underrun | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="phoboslab/underrun")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem