Hard puzzle in which the used numbers are hidden

How to Play Number Fill In

Number Fill In gives you the quiet satisfaction of sliding number sequences into a crossword-style grid until every row and column clicks perfectly into place. It suits anyone who enjoys logic puzzles and wants a calm, screen-friendly challenge they can pick up and put down at will.

Open the puzzle and study the grid of empty cells
Scan the list of provided number entries to get a feel for their lengths
Use the pre-filled starter entry as your anchor point
Work outward by matching entry lengths to available across and down slots
Fill in the remaining entries until the grid is complete

Controls

Tap or click a cell to select it, then type the digit you want to place. Switch direction between across and down as you work through the grid.

When does a round end?

A round ends when every cell in the grid is correctly filled with its matching number entry.

Tips & Tricks

Start with the longest number entries — they fit fewer slots, so they narrow your choices fastest
Count the digits in an entry before trying it in a slot; length mismatches are an instant rule-out
When you are stuck, look for slots that share a crossing cell with a number you already placed
The pre-filled starter entry reveals at least one confirmed digit in adjacent slots, so build from it early

Why people keep coming back

No math required every entry is given to you; the challenge is placement, not calculation
Crossword-style grid numbers read across and down exactly as words do in a classic fill-in puzzle
Built-in starter entry one answer is pre-placed in every puzzle so you always have a foothold
Mixed across and down entries are unsorted, so finding the right slot is the heart of the puzzle
Pure logic format no timers or penalties create a relaxed, pressure-free solving experience
Focused category sits squarely in Puzzle and Trivia, designed for one clear kind of satisfaction

Content & audience

Suitable for all ages (ESRB E; PEGI 3; DJCTQ L; USK Everyone; IARC 3; COB-AU G; GRB All; PCBP 0; CSRR G; CCC TE; Microsoft 3).
Free game supported by advertising, with optional in-app purchases.
Single-player experience: no chat, no messaging and no user-generated content.
Playable offline; no account required.

Category: Video Gaming › Puzzle Video Games › Word Games · Store category: Puzzle & trivia

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About Number Fill In

Number Fill-In puzzles are crossword puzzles with a fun twist — instead of words, every entry is made up of numbers!

No math skills are required. Just like a traditional Word Fill-In, all the entries are provided for you. Your goal is to fit them into the diagram, with entries running across and down, just like in a crossword puzzle.

The entries are mixed together, so you’ll need to use logic and the crossing numbers to discover where each one belongs. To help you get started, one entry is already filled in in every puzzle.