Radardle

A daily game of judging speed by eye. Watch two reference runs, then estimate the mystery run, from runners and cyclists up to trains and jets. Five rounds a day, scored on how close you get, with seeded sets to share and endless practice. Blind mode for non-dailies for no reference runs!

Radardle

Guessing

How to play Radardle

There is no timer. Take as long as you like.

Each run is timed at the vehicle's nose. The dot above the nose marks that point. A and B light up as the dot crosses them, and the radar unit at B flashes at the finish. The vehicle is already at speed when it enters and keeps that speed until it leaves.
A round is worth up to 1,000 points and a set of five up to 5,000. A close guess costs almost nothing, and the cost grows quickly as the miss gets larger. Being 10% off costs about 200 points.
Once the runs have played you can replay any of them. Each replay costs 200 points from that round, about the same as a 10% miss, so buy one only if it will improve your estimate by that much.
Switch between mph and km/h at any time. The rounds and the scoring are the same in both.
The course shows a start marker A and a finish marker B , with the distance between them labeled.
Three runs play over that same distance: a slower run, a faster run, then the mystery run. The signs under the course give the speeds of the first two.
Enter your estimate of the mystery run's speed. It always lies between the two signs.
The reveal shows the true speed, how far off you were, and your score for the round.
Daily. The same five rounds for every player, changing at midnight UTC. Your first finished attempt counts toward your stats and your streak.
Seeded.

The facts

Runs on: radardle.com
Category: Guessing
Languages: English
How often: A new puzzle every day
On BoreGame since: October 2026
Last updated: October 8, 2026
Price: Free, no signup

Questions about Radardle

How do you play Radardle?

There is no timer. Take as long as you like. Each run is timed at the vehicle's nose. The dot above the nose marks that point. A and B light up as the dot crosses them, and the radar unit at B flashes at the finish. The vehicle is already at speed when it enters and keeps that speed until it leaves. A round is worth up to 1,000 points and a set of five up to 5,000. A close guess costs almost nothing, and the cost grows quickly as the miss gets larger. Being 10% off costs about 200 points. Once the runs have played you can replay any of them. Each replay costs 200 points from that round, about the same as a 10% miss, so buy one only if it will improve your estimate by that much. Switch between mph and km/h at any time. The rounds and the scoring are the same in both. The course shows a start marker A and a finish marker B , with the distance between them labeled. Three runs play over that same distance: a slower run, a faster run, then the mystery run. The signs under the course give the speeds of the first two. Enter your estimate of the mystery run's speed. It always lies between the two signs. The reveal shows the true speed, how far off you were, and your score for the round. Daily. The same five rounds for every player, changing at midnight UTC. Your first finished attempt counts toward your stats and your streak. Seeded.

Where can I play Radardle?

On radardle.com. You can also start it from this BoreGame listing.

How it compares

If you play Radardle, the closest things to it in the catalogue are Cutle, Magnitudle and Noillirk. They sit in the same guessing category. See the full list of alternatives.