Cataclysm: Dark Days Ahead is described as 'Roguelike set in a post-apocalyptic world. Surviving is difficult: you have been thrown, ill-equipped, into a landscape now riddled with monstrosities of which flesh eating zombies are neither the strangest nor the deadliest' and is a role-playing game in the games category. There are more than 25 games similar to Cataclysm: Dark Days Ahead for a variety of platforms, including Windows, Mac, Linux, Android and Steam apps. The best Cataclysm: Dark Days Ahead alternative is Shattered Pixel Dungeon, which is both free and Open Source. Other Cataclysm: Dark Days Ahead like games are Pixel Dungeon, NetHack, Ancient Domains of Mystery and Brogue.