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Portentum

The cryptid deck-building auto battler. Hunt for broken combos with cryptids like Bigfoot, Jimothy, Nessie, and the Chupacabra. If somebody's uncle saw it in the woods in 1973, there's a good chance it's a card in Portentum.

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Guides for Portentum

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No guide published yet. We only publish when a game has at least three verifiable sources and three verbatim player quotes. This game is queued for review.

About this game

Developer description

Quoted from the Steam store page. Read the full description

Free to play. Early Access on Steam October 28. Portentum is online only. Every battle is fought against a snapshot of another player's warband, so you need an internet connection to play. Portentum is a deck-building auto battler where you craft a roster of legendary cryptids with one-of-a-kind abilities and send them into battle. Every culture on Earth has a monster it swears is real. Portentum puts them all in one deck. You draft cryptids from around the world, build them into a warband, and send them into battles that play out on their own. Your job is everything that happens before the first die lands. FOLKLORE FROM AROUND THE WORLD Mothman. Bigfoot. Nessie. The Chupacabra. The Yeti. The Kasai Rex. If somebody's uncle saw it in the woods in 1973, there's a good chance it's a card in Portentum. Every creature gets hand-painted art and its own way of wrecking the other side of the board. A RACCOON NAMED JIMOTHY Every other cryptid in Portentum has spent centuries avoiding cameras. Jimothy walked down a Seattle street and let seven million people watch. DECK BUILDER…

Media

Screenshots

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Images: Snowfall Games via Steam, shown for editorial coverage.

Specs

System requirements

Published by the developer on Steam. Not our own benchmark.

minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 (64-bit)
  • Processor: 2.0 GHz dual-core
  • Memory: 4 GB RAM
  • Graphics: OpenGL 3.0-capable GPU
  • Storage: 500 MB available space

recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows 11 (64-bit)
  • Processor: 2.5 GHz quad-core
  • Memory: 8 GB RAM
  • Graphics: OpenGL 3.0-capable GPU with 1 GB VRAM
  • Storage: 1 GB available space

FAQ

Common questions

When was Portentum released?+

Steam lists the release date as Oct 28, 2026 (not yet released).

What platforms is Portentum available on?+

Windows, macOS, Linux

How is Portentum reviewed on Steam?+

No review data captured yet.