The free demo of Mortuus, a co-op shooter with blocky visuals reminiscent of Minecraft, has landed on Steam and won very positive reviews from early players. The game from studio Hamuno pairs Minecraft's square, simplified look with Left 4 Dead-style wave gameplay, where up to four people team up to defend against zombie hordes on procedurally generated maps. The demo has been available since October 14, 2026, and holds 94% positive ratings across 531 Steam reviews.

Blocky Style Instead of Realism

Mortuus doesn't hide its inspiration from the world built out of cubes. The developers went with "blocky visuals," a simplified, angular look that keeps hardware requirements low and, as screenrant.com put it, gives the game's world extra character. This approach, familiar to anyone who took their first steps in Minecraft Java Edition, makes it possible to throw zombie hordes and sprawling, procedurally generated levels at players without requiring a powerful graphics card.

Unlike Minecraft, though, Mortuus is not a sandbox game: there's no mining resources, building bases or crafting items here. The blocky graphics are purely a visual style, set in brutalist, industrial locations, and not the foundation of the gameplay.

Zombie Waves and Co-op for Up to Four Players

The core of the gameplay is a formula known from Left 4 Dead: players, solo or in a group of up to four online, fend off successive waves of zombies on a closed, procedurally generated map. Points earned during fights can be spent to open more doors, unlock new sections of the map and buy weapons, adding a risk-management element familiar to fans of co-op shooters.

  • unique zombie types and bosses in later waves
  • a dismemberment system for enemies
  • secrets to discover scattered around the map
  • buying weapons and opening passages with points earned in combat
  • a single-player mode and online co-op for up to four players

System Requirements and Platforms

The Mortuus demo runs on Windows 10/11, macOS 12 Monterey or later, and SteamOS and Linux (Ubuntu 22.04 LTS or SteamOS 3), making it accessible to a wide range of players, including those with weaker PCs. Minimum requirements on Windows are an Intel Core i3-6100 or AMD FX-6300 processor, 6 GB of RAM, and an NVIDIA GTX 750 Ti or AMD R7 260X graphics card with 2 GB of VRAM.

The recommended setup is noticeably higher: an Intel Core i5-8400 or AMD Ryzen 5 2600, 16 GB of RAM, and an NVIDIA GTX 1660 Super or AMD RX 5600 XT with 6 GB of VRAM. The low minimum requirements combined with blocky graphics echo the approach the Minecraft servers community has used for years, where visual simplicity lets you play on practically any hardware.

Full Version Status

Mortuus is marked "Coming Soon" on Steam, which means the current demo is not yet the full game. Developer Hamuno hasn't announced a specific release date or a price for the final product, and the demo most likely serves mainly to gather feedback and fixes ahead of the full release.

The positive reception at launch, 94% good reviews out of more than 500 ratings, gives the developers an argument for continuing to develop the project. Interested players can download the demo from Steam for free for now and see how the blocky aesthetic works with a survival horror atmosphere, before the studio decides on the date and terms of the full release.

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