Echo

Make a sound. The room shows up for a breath, then the dark takes it back. You're a small light with one voice. Press space to ping: walls, dust, and the door flare into view, then vanish. Eight rooms. The door only shows if you ping near it.

Controls
Move: WASD / arrows / drag
Ping: space / tap

Runs in your browser, about five minutes. Made by yun. All the art is drawn live in code, no image files. If you reach the room where the walls remember you, tell me.