The date is indicated in the corresponding trailer on YouTube.
The authors describe their project as follows: “Cataclysm combines real-time strategy and castle defense. Build fortresses from blocks and protect the last bastion of humanity from hordes of nightmares in a post-apocalyptic world. Survive the siege and dispel the ominous fog. You will find a story about hope, resilience and unity.”
The developers’ previous work is Moonlighter, released in 2018. This is an action RPG with rogue-lite elements with 82% positive reviews on Steam.
Cataclysm will be released in Early Access format: players will have access to the main story campaign of eleven levels set in two different biomes.