Bubble Glide

One control, no menus, and a run that starts the moment the page paints — this is the cleanest possible version of a browser game. The ramp is gentle for the first twenty seconds and then honest about what it expects from you.

Scores improve quickly, which is exactly why it is easy to lose twenty minutes to it. It will not impress anybody looking for a story, but as an endless personal-best machine it does precisely one job and does it well.