Balance Scale — free browser game

Your goal is to keep the scale balanced for as long as possible by dropping the weight that appears at the top of the screen (ranging from 1 to 5) onto the correct pan, and to raise your score. The left arrow / A key or tapping the left half of the board drops the weight onto the left pan, while the right arrow / D key or tapping the right half drops it onto the right pan; the R key resets the game. Each weight increases the total torque on its pan and the difference between the two sides tilts the scale; if the tilt goes past ±45° and the grace period (about half a second) runs out, the scale topples over and the game ends. You have to decide before the fuse bar under the preview empties: if time runs out the weight drops automatically onto the heavy side and throws off the balance even more. As a strategy, save the light weights (1–2) to fine-tune the tilt and send the heavy weights (4–5) straight to whichever pan is lighter; as your score rises both the weight range widens and the fuse shortens, so watching the totals of the two pans on the HUD and compensating for small differences early is the key to survival.