js13kGames 2026
A month long online competition to build a web game that fits into a 13 kilobyte zip package. Entries are due September 13, 2026, with prizes for the top 100 and each category.
js13kGames 2026 is the fifteenth annual online competition for tiny web games. It started on August 13, 2026 and runs for one month. The task is to build a web game that follows the given theme and fits into a 13 kilobyte zip package. This year's theme is "Unicorns and Rainbows".
Entries compete in the Desktop, Mobile, WebXR, Online and Wavedash categories. Each category has its own ranking and its own prizes. The organizer promises free shirts and gadgets for the top 100 entries, shipped worldwide, plus prizes for each category.
The submit form has been open since August 20. Developers can register a draft early to lock in the name of their game and fill in the rest later. The deadline for entries is September 13, 2026.
Ideas and questions can be discussed on the js13kGames Slack and Discord. The competition is run by Andrzej Mazur, who also runs the Gamedev.js community.