C4 Alert

Has been code-signed and notarized - just download and run.

Set four pieces in a row, either in diagonally, perpendicularly or horizontally order.
Play against macOS or human player at the same Mac computer.#

Formerly known as "Four In A Row" from the defunct "Classics For X" web site, this is a completely revised versions of this game, now named "C4 Alert".

System requirements:

macOS 10.14+, Intel + Silicon

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