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Grid Duel

Tic Tac Toe for Android, made with care: three boards, three rival characters, honest results and light ads.

Get it on Google Play (opens in a new tab)
Status
Live
Category
Game
Platforms
  • Android
Home with the level and stars, a live board, a large Play button, Two players and a ready daily chest

Tic Tac Toe that never misleads the player.

Tic Tac Toe is one of the most familiar games there is, and the established versions on Android tend to wrap it in heavy advertising, template visuals and feedback that congratulates a player who has just lost. Grid Duel is a Tic Tac Toe game for Android phones built around the opposite: short, calm matches in which every state is designed and the game never misleads the player.

It is played on 3x3, 4x4 and 5x5 boards, against one of three computer rivals or against a friend passing the same phone. The winning line is always drawn, a loss is called a loss, and a draw says that nobody got a line.

Everything collectable is earned by playing. Stars, levels, a daily chest and seven medals lead to 24 marks, boards, win effects and themes, each previewed before it is chosen. The only thing for sale is the removal of ads.

Who it is for.

  • Quick breaks

    Matches of a minute or two, played one-handed with the sound off, with the first move two taps from launch.

  • Two people, one phone

    A two-player mode that remembers both names, keeps a running score and offers Undo for the last move.

  • Players who want a challenge

    Sage plays perfectly on 3x3 and plans ahead on larger boards, and Trophies records results per rival and per board.

  • Collectors

    Twenty-four marks, boards, win effects and themes, unlocked with stars or by earning medals.

What it does.

Shipped capabilities only. Planned work is listed separately, under “On the roadmap.”

  • Three boards, each with its rule

    3x3 needs three in a row; 4x4 and 5x5 need four. The rule is shown before every match.

  • Three rivals with a personality

    Pip plays fast and forgets to block. Rook always takes a win and blocks a threat, but rarely plans ahead. Sage plans ahead, never loses on 3x3, and unlocks after Rook is beaten three times.

  • Fair opponents

    Rivals see only the board, never change strength in secret, and reply within two seconds behind a visible thinking bubble.

  • Honest results

    The winning line is always drawn. A loss is never congratulated, and the result explains what happened, such as the line the rival took.

  • Two players on one phone

    The same boards and rules with names, a choice of who starts, Swap marks and a running session score.

  • Hint and Undo

    One free hint a day, then optional hints in exchange for watching an ad, at most three per match. Undo takes back a full turn at no cost.

  • Progression earned by play

    Up to three stars per match, XP and levels, a daily goal of three wins that opens the daily chest, a seven-day track and seven medals. No currency is sold.

  • A collection with preview

    Eight mark sets, six boards, five win effects and five themes. Every item can be previewed before it is chosen, and equipping is free and reversible.

  • Offline, one-handed, sound off

    Play, progression, the collection and the daily chest work without a connection. Marks differ by shape as well as colour, and reduced motion and system text size are respected.

How it works.

  1. Choose a rival and a board

    Pick Pip, Rook or Sage, a 3x3, 4x4 or 5x5 board, and who moves first. The last choices are remembered.

  2. Play the match

    Tap a cell to place a mark. The rival thinks briefly and replies, and the first complete line wins.

  3. Read the result

    The result gives the verdict, up to three stars, the XP earned and anything newly unlocked.

  4. Rematch or collect

    Rematch keeps a running score for the session. Stars unlock marks, boards, effects and themes in the Collection.

Screens.

Screens from the product design.

  • Choose your rival on Rook, rated Medium, with board size and first-move choices and a Start button
  • Versus intro of the player against Rook on a 3x3 board, ending in Go, with tap to skip
  • A 3x3 match against Rook showing the session score, the rival’s speech bubble and Your move
  • The win moment: a diagonal line of three X marks drawn across the board
  • A 5x5 match against Pip, where four in a row wins
  • Victory result with three stars, XP, daily chest progress and a newly unlocked mark set
  • A loss result that says Rook took the diagonal and suggests blocking the corner next time
  • Collection of mark sets with a live board preview, owned, equipped and locked items
  • Daily chest with a seven-day track of star rewards and a chest on day seven
  • Trophies with wins, draws and losses against each rival on the 3x3 board, and win streaks
  • Two players setup with both names, Swap marks, board size and who starts

Privacy and data.

Grid Duel has no accounts. Progress, settings and the collection stay on the device; anonymous usage data, crash reports and ads are handled by Google services, subject to the player’s choices.

  • Level, stars, medals, collection, settings and any names typed for a two-player match are stored only on the device.
  • Ads, personalised ads, usage measurement and crash reports each have their own switch in Settings.
  • Where the law requires consent first, the game asks before switching anything on, and every answer lets the player continue.
  • No name, email address, contacts or precise location is collected, and personal data is not sold for money.
  • The game is intended for players aged 13 and older.

Availability and specification.

Status
Live
Availability
Category
Game
Business model

Free, with light advertising and one optional purchase that removes ads. Banners appear on menu screens only, never during a match and never in the first session; full-screen ads appear only between matches, and ads for hints are always optional.

Built with
  • Godot
  • GDScript
  • Google AdMob
  • Firebase Analytics
  • Firebase Crashlytics
  • Google Play Billing

Questions about Grid Duel.

Where can I get Grid Duel?

On Google Play, for Android phones running Android 7.0 or later.

Does it need an internet connection?

No. Matches, progression, the collection and the daily chest all work offline. Ads, ad-supported hints and the Remove ads purchase need a connection.

Can two people play on one phone?

Yes. Two players mode uses the same boards and rules, remembers both names and keeps a running score. It awards no stars or medals.

How hard is Sage?

On 3x3 Sage plays perfectly: it wins when the player makes a mistake and draws otherwise. On 4x4 and 5x5 it plans several moves ahead within a time limit and can still be out-planned.

Can anything be bought?

Only the removal of ads, as a one-time purchase that can be restored on another device with the same Google account. Stars cannot be bought; every item is earned by playing.

Do ads appear during a match?

No. Ads never appear during a round, over the board or in the first session.

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Get Grid Duel.

Tic Tac Toe for Android, made with care: three boards, three rival characters, honest results and light ads.

Get it on Google Play (opens in a new tab)

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