Logic & Math 1 plays
Umbra
greatest.gamesA free daily light-and-shadow logic puzzle. Divide the whole grid into fields of light and shadow: each field contains exactly one numbered given equal to its size, and two fields of the same shade can never share an edge. Question-mark givens hide their size and appear from midweek onward. A new puzzle every day, with a dated archive of past editions.
Umbra
Logic & Math
The facts
- Runs on
- greatest.games
- Category
- Logic & Math
- Type
- Grid logic
- Studio
- Greatest Games
- Languages
- English
- How often
- A new puzzle every day
- On Alldle since
- September 2026
- Price
- Free, no signup
Questions about Umbra
- Is Umbra free to play?
- Yes. Umbra runs in a browser at no cost, with nothing to install and no purchase to make.
- How often does Umbra reset?
- Once a day. Everybody gets the same puzzle, and a new one replaces it when the game's day rolls over.
- Can I play Umbra unlimited?
- Not Umbra itself, which gives one puzzle a day. The closest unlimited games to it in this directory, all of which you can replay as often as you like: Hashi Puzzle, XY Marks the Spot and Fleetoku. Hashi PuzzleXY Marks the SpotFleetoku
- What languages does Umbra support?
- English.
- Where does Umbra run?
- On greatest.games, and you can play it inside this page without leaving Alldle.
- What kind of game is Umbra?
- It sits in Logic & Math, alongside the other daily games of that kind in the catalogue.
How it compares
If you play Umbra, the closest things to it in the catalogue are Shikaku of the day, Daily Akari and LINKR. They share its grid logic. See the full list of alternatives.