39 Days to Mars is a two-player co-operative game developed by Its Anecdotal. The game is set in a steampunk world and players assume the roles of Sir Albert Wickes and The Right Honourable Clarence Baxter, two explorers who are piloting the HMS Fearful on its maiden voyage to Mars. The game features action and thoughtful puzzles, making it perfect for short sessions.

The game's atmosphere is enhanced by its unique illustrated artwork and a rich sound-scape. The piano score punctuated by occasional disasters is a beautiful addition to the game. The game also features a single-player AI mode where the ship's computer-controlled cat accompanies the player. However, the game is designed for two players, and both players have important roles to play in the adventure. The HMS Fearful is a masterpiece of unreliable engineering, and the players need to work together to solve problems that arise during the voyage.