# Ex & Oh — Tic-Tac-Toe Adventure

> Tic-Tac-Toe Adventure (iPhone/iPad app by Bluecosmium.)

- Source: https://appshunter.io/ios/app/ex-and-oh/id6816319368 (this page in markdown: same URL + `.md`)
- Developer: [Bluecosmium](https://appshunter.io/developer/6805928944)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 17 MB
- Languages: American English, Japanese, Korean
- Released: 2026-09-30
- Data updated: 2026-10-09
- User reviews in markdown: https://appshunter.io/ios/app/ex-and-oh/id6816319368/reviews.md

## What is Ex & Oh?

In 1952, inside a room-sized computer called EDSAC, one of the first video games ever made woke up: tic-tac-toe. Ex & Oh brings it back as an adventure.

SEVEN WORLDS, SEVEN RULES
Each world changes one thing about the game you know.
• Classic — three in a row, against a machine that learns.
• Fifteen — take numbers 1 to 9; three that add to 15 win.
• Drop — four columns with gravity.
• Wild — place X or O; any line you complete is yours.
• Blind — your marks go dark. Play from memory.
• Notakto — three boards, only X. Whoever completes the last line loses.
• Ultimate — nine boards in one. Your move decides where your opponent plays.

A MACHINE THAT HAS SOLVED THE GAME
Opponents climb from Novice to EDSAC across ten levels. Where a game is solved, EDSAC plays perfectly — and three stages ask you to beat it anyway, in the variants where the first player can force a win.

LEARN FROM EVERY GAME
• Move-by-move review against the solved truth shows exactly where the result changed.
• Hints when you are stuck.
• Observer mode reveals the value of every position.
• Three stars per stage: clear the goal, clear it without hints, clear it flawlessly.

A NEW PUZZLE EVERY DAY
Today's puzzle is free forever, with or without the full game. Keep a streak going.

FREE PLAY
Any rule, any level — or two players on one phone.

FAIR AND QUIET
• The first world, Classic free play and the daily puzzle are free.
• One purchase unlocks everything else. No ads, no subscription, nothing else to buy. Family Sharing supported.
• Works completely offline. No account. No data collected.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full game | $2.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-09-30

No release notes.

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## More apps by Bluecosmium

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All apps by Bluecosmium: https://appshunter.io/developer/6805928944

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*