Room and Pillar

Simple mining game

Free · Designed for iPad. Not verified for macOS.

Room and Pillar is an abstract strategy game by Mark Steere, played on a Konane board: a grid filled with a checkerboard pattern of black and white stones. Black and White take turns removing one of their own stones. After the first removal, every removal must be next to an empty point, and a removal must never create a 2x2 area of empty points. The last player able to remove a stone wins. The rules take a minute to learn. The game has no draws, no luck and no turn-order advantage worth mentioning, and it uses the pie rule. FEATURES - Play against the computer at six levels, from random to unbeatable. The top level plays perfectly on the smaller boards. - Play against a friend on one iPhone or iPad. - Five board sizes: 4x5, 5x6, 6x7, 7x8 and 8x9. - Pie rule on or off. Choose who moves first. - Legal removals can be marked. Confirm removals on or off. Undo and a hint are one tap away. - The complete rules with diagrams, inside the app. - No ads, no accounts, no internet connection needed, nothing collected. Room and Pillar was designed by Mark Steere in August 2026. More of his games can be found at marksteeregames.com.

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Each color can now be a human or a computer level. Play either color, play another person, or watch two computer levels play each other.

Version 1.2

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

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    Information

    Seller
    Mark Stuart Steere
    Size
    459.8 KB
    Category
    Board
    Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Mark Steere
  • Developer Website
  • Privacy Policy