OpenTTD 15.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The common filename for the program's installer is openttd-1.1.1-macosx-unive.zip.
The most popular versions among the program users are 1.4 and 1.1. The software is categorized as Games. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The unique identifier for this program's bundle is org.openttd.openttd. The actual developer of this free Mac application is OpenTTD Team.
From the developer:
OpenTTD is a clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.
OpenTTD is modeled after the original Transport Tycoon game by Chris Sawyer and enhances the game experience dramatically. Many features were inspired by TTDPatch while others are original.
You may want to check out more Mac applications, such as Algodoo, ChatBot or Euro Truck Simulator, which might be similar to OpenTTD.
Simulation