Terraria: Otherworld is described as 'Expanding upon the immensely popular action-sandbox title Terraria, exploring what might have been, and approaching gameplay in a new direction; Terraria: Otherworld represents a novel take on the Terraria experience' and is a Sandbox Game in the games category. There are more than 10 games similar to Terraria: Otherworld for a variety of platforms, including Windows, Linux, Android, Mac and Steam apps. The best Terraria: Otherworld alternative is Minecraft. It's not free, so if you're looking for a free alternative, you could try Mine Blocks or The Blockheads. Other Terraria: Otherworld like games are Terraria, Starbound, Creativerse: The Definitive Edition and Freeminer.