Undermine: Four in a Row

Hidden mines. Two players.

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Line up four — but 18 hidden mines flip any chip that steps on them. Play a friend on one device, or take on the computer at three levels. Undermine is a tense two-player board game for one iPhone or iPad lying on the table between you. Take turns placing chips on your own entry row or moving any chip on the board — yours or your opponent's — one step in any direction. Be the first to line up four of your colour, across, down or diagonally. But 18 mines are hidden under the 6 × 6 board, three in every row, and nobody knows where. Whenever a chip steps on a mine, it flips to the other colour. Push your opponent's chip onto a mine and it becomes yours — or complete their line by accident and hand them the win. • Two players face to face on one device, or VS Bot at Easy, Normal and Hard • Tabletop layout: each player reads their own end of the screen • Learn in a minute with illustrated How to Play cards and in-game tips • Undo a move by watching a short ad • Your game is saved automatically — continue any time • View the mines when the game ends and see where it turned • Free with ads; a one-time Remove Ads purchase turns them off • English, Traditional Chinese and Korean

Ratings & Reviews

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• Rule tips for new players • Movable chips glow on your turn • Fewer ads between matches

Version 1.2.0

The developer, Sui Pan WAN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Sui Pan WAN
Size
4.8 MB
Category
Board
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
Languages
English and 2 more
  • English, Korean, Traditional Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Sleep In Studio
  • Developer Website
  • Privacy Policy