Steam Playtests
Shadows Across The Sun

Open now · By request

Shadows Across The Sun playtest

by KnowledgeIsPorridge

You are one of the last to fight back — a scavenger, a soldier, a changeling — surviving run after run across the wreckage orbiting the dying star. Each attempt takes you closer to the truth buried at its core.

It's free to ask. The developer chooses who gets in.

Access
By request
On playtest since
Oct 28, 2026
Planned release
2026
Developer
KnowledgeIsPorridge
Platforms
Windows, macOS, Linux
Players
Single-player
Languages
English

How to join the Shadows Across The Sun playtest

  1. Open the game's Steam page with the Request access button. Sign in to Steam if it asks.
  2. Request access to the Shadows Across The Sun playtest there. It's free and doesn't commit you to anything.
  3. The developer lets players in, often in batches, so it can take a while. Steam emails you when you're in, and the playtest appears in your library.

New to playtests? How Steam playtests work

How AI is used

Some writing tools and image-generation processes were used alongside our own artwork. We begin with concepts and exploratory art created in-house, and these tools help us produce consistent final assets when needed.

The developer's own words, from Steam.

About Shadows Across The Sun

"The Sun is dying, its light devoured piece by piece. We don’t know what moves across its face — only that it watches, and it builds. We have one choice left: destroy the shadows across the Sun, or vanish beneath them."

A sci-fi deckbuilder set in the wreckage of a dying system.

Play as a Soldier, Scavenger, or Changeling and explore the twisted debris pulled into orbit by the Anomaly at the heart. Salvage, adapt and build your deck to survive long enough to uncover what the shadows are becoming.

Features:

  • Tactical card combat with deep deckbuilding and roguelite progression.
  • Multiple classes and playstyles to master.
  • A sci-fi narrative told through fragments, logs, and direct encounters with the Anomaly.
  • Dynamic map of branching encounters orbiting the Sun’s dying light.

Gameplay unfolds in Iterations — doomed attempts to reach the core before the Sun’s radiation overwhelms you. Each death resets time, but not progress. New encounters, reworked maps, and hard-won upgrades carry forward, letting you push deeper with every run.

Build your strategy from a wide array of cards:

  • Aggressive, Defensive and Ability cards shape each encounter.
  • Some work in battle — others reshape the map itself.
  • Install Shield Generators, unlock permanent locations, or expose the horrors lurking in the shadows.

The Sun is fading. The shadows are spreading.

Can you stop the Machine at the End of Time?

From the game's Steam page.