Eclipse Chaser

Eclipse Chaser is a one-button endless runner where you're sprinting ahead of a void that's swallowing the world behind you. Tap to jump, hold in the air to backflip, and if you land the flip you get a speed surge that also lets you punch straight through obstacles instead of dying. Miss it and you eat dirt. The world shifts through six different color moods as you go, like sunset, deep blue night, aurora, total eclipse, so it never looks the same for long. The whole thing's built in a single HTML file with no image or sound assets, just canvas drawing and some oscillator-based SFX, so it loads instantly and runs offline.