Portal 1's outro Still Alive made with HTML, CSS and JS for its 10th anniversary

Portal End Credits in HTML/JS/CSS

Portal game in elixir, based on https://howistart.org/posts/elixir/1

Portal Game is a Java-based 2D platformer where players collect apples, avoid enemies, and navigate levels using portals. The game combines platforming challenges with teleportation mechanics for an engaging experience.