Straight to the point: Cobra Rush is a starting step of 105 ms that tightens as you eat, playable in your browser right now. It is tuned for quick runs, honest difficulty, and controls that make sense the first time you touch them.
The snake moves in fixed steps; each pellet eaten adds length and slightly tightens the interval, so the game gets harder the better you do. Walls and your own tail both end the run instantly. The a starting step of 105 ms that tightens as you eat, and the ramp is tuned so mid-game still feels fair.
The loop is deliberately compact: one round takes minutes, improvement is visible, and the next run is one tap away. That makes it a reliable filler for short breaks - and an easy game to recommend to someone who 'does not really play games'.