First Martians is a free companion app for Android devices, developed by Portal Games Digital. This app is essential for playing the board game First Martians, as it features hundreds of events and adventures for great replayability. The app tells the story of the first Martians through text and sound, and challenges players with tasks and obstacles. It immerses players in the presented world, making the adventure feel more realistic.

It is important to note that exploring the app without actually playing the board game may spoil the experience, so it is recommended to use it only when playing the game. Overall, First Martians is an excellent companion app that adds a new level of immersion to the board game.