JavaScript Tetris
Best for Desktop players who want a simple falling-block implementation.
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 JavaScript Tetris for you?
Desktop players who want a simple falling-block implementation. A small canvas falling-block game for keyboard play.
What this browser project includes
This is Jake Gordon’s JavaScript Tetris experiment, not an official Tetris service. Its README lists browser support and keeps touch support in the future-work list.
Before you start
Game not loading? Use the safe troubleshooting guide before resetting anything.
Press Space to play and check the project’s keyboard instructions. Complete horizontal rows and avoid filling the board. 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. Press Space to play and check the project’s keyboard instructions. Complete horizontal rows and avoid filling the board.
What to try instead
- OpenTTD — Plan railways and cargo routes in the community browser build of OpenTTD. Check its setup and save-export options before building your transport network.
- Freeciv-web — Explore Freeciv-web for turn-based civilization building in your browser. Compare single-player and slower multiplayer choices and find the current game entry.
Source and project links
Popularity reference: Project GitHub stars ↗. Observed GitHub repository stars; rounded display values retained as observed, not users. Heat: 734; 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.