How to play Angle Game
Your job is to make the angle shown above the dial. The dark ray stays still; the red ray is yours to move. The shaded wedge marks the angle between them.
- Read the target, from 0° to 180°.
- Drag the red ray or use the slider to set your estimate. There is no live degree readout.
- Choose Lock in angle. The dashed blue ray reveals the target; the red ray shows your choice.
- Review the absolute error and points, then move to the next angle. Each submitted choice is final.
There is no timer and no sudden score wipeout. Finish five rounds, copy a spoiler-free result, and call it a day—or try another game if you feel like it.
A sharper eye, one angle at a time
A right angle is 90°. An acute angle is smaller; an obtuse angle is larger but less than 180°. A straight angle is 180°. Use those familiar shapes as mental reference points, then check how close you were after each round.
Each round is scored independently, up to 200 points. For example, a 5° error earns 156 points and a 10° error earns 121. A miss in one round does not remove points earned in another. The daily leaderboard ranks only completed five-round sets.
Prefer estimating real-world scale? Try Heightle. For a daily word association challenge, play Chainle.
Questions, answered
- What is Angle Game?
- Angle Game is a visual estimation puzzle. You see a target angle in degrees, then move the red ray to make that angle without a live measurement. Submit to reveal your actual angle and error.
- How do the controls work?
- Drag anywhere on the angle dial or move the slider. With the slider focused, arrow keys adjust by one degree. The minus and plus buttons do the same. Angles range from 0 to 180 degrees.
- How is my score calculated?
- Each of the five rounds is worth up to 200 points. The score is 200 multiplied by exp(−absolute error ÷ 20), rounded to the nearest whole point. An exact angle earns 200; a 5-degree error earns 156. Your five scores add up to a maximum of 1,000. There is no bust penalty.
- When does the daily game reset?
- A new daily challenge starts at 00:00 UTC. All players get the same five targets for that date. Submitted rounds cannot be changed. Complete all five rounds to enter the Angle Game daily leaderboard.
- Can I play more than once?
- Yes. Unlimited practice offers a fresh set of five angles when you finish a set. Practice stays on this device and never changes your daily leaderboard score or completion streak.
- Does my progress save?
- Daily choices save in this browser when storage is available and sync to your anonymous PlayChainle record when the online service is reachable. A local result is not a confirmed online score. Keep the same browser to retain your anonymous identity; cross-device recovery is not provided.
