4O4

4O4 is a arcade game by Danny van Geel, submitted to the js13kGames 2020 competition. Like every js13k entry, it was built from scratch in under 13 kilobytes — code, art, audio and all — which is an extraordinary constraint that forces clever, focused design.

This entry is part of our catalogue because it represents the spirit of the size-limited game jam. Play it on the official js13k showcase to see what fits in 13KB. (Factual placeholder — a full review will follow.)

Most js13kGames entries use keyboard or mouse controls. Click through to the official js13kGames page for 4O4 to see the in-game instructions.

Generally: arrow keys or WASD for movement, mouse for point-and-click titles, and space for primary actions. (Factual placeholder — specific controls will be documented in the full guide.)