What's in the free Shroom and Gloom demo?
The free Shroom and Gloom demo on Steam includes 26 handcrafted tunnels across the game's biomes, dual combat and explore decks, Foresight cards, spore-swarm enemies, biome bosses, and three unlockable playstyles. After the June 2026 overhaul it also adds a new prologue, a reworked exploration system, and an ending event that reaches The Gloom.
Quick answer
The Shroom and Gloom demo is the best way to play Team Lazerbeam’s first-person roguelike double deckbuilder before Early Access arrives. It has been live on Steam since May 14, 2025, received a major content overhaul announced at PC Gaming Show on June 8, 2026, and has since been downloaded over 100,000 times according to the developers’ July dev log. Player reception has been strong throughout: the demo sits at an overwhelmingly positive (96%+) rating on Steam based on more than 1,000 reviews.
This page covers exactly what the demo contains right now, what changed in the 2026 update, and how it differs from the full Early Access version launching September 10, 2026 (PT).
What content does the Shroom and Gloom demo include?
Per the official Steam demo page, the current build contains:
- 26 handcrafted tunnels to delve through, rather than fully randomized runs
- Two decks in every run — a combat deck for fighting and a separate explore deck for navigating the tunnels
- Spore swarm enemies filling the tunnels between encounters
- A boss for each ecological region you pass through
- Foresight cards, which let you peek ahead and plan your next moves
- Three unlockable playstyles (build archetypes) that change how you approach a run
The demo preserves the game’s core loop that previews from PC Gamer and PowerUp! described: you fight mushroom monsters with combat cards, then switch to your explore deck to bash locked doors with your head, dig up weapons with a shovel, cook meals, and eat the corpses of your enemies to heal — because there are no block cards, “less blocking, more eating” is the design.
What changed in the June 2026 demo update?
The June 8, 2026 update, announced during PC Gaming Show, was the demo’s biggest overhaul:
- Reworked exploration system — tunnel traversal was rebuilt, with torches and creature interactions reported by press coverage
- A new prologue — a fresh opening sequence for new players
- A new ending event — runs can now conclude by reaching The Gloom, giving the demo a proper finale it previously lacked
If you played the demo in 2025 and bounced off it, the 2026 version is effectively a different build: same core decks and combat, but a much more complete arc from start to finish.
How popular is the demo?
- Over 100,000 downloads, per the developers’ July dev log (press coverage in August cited an even higher figure, but we use the conservative official number)
- An appearance in Six One Indie Demo Days
- Overwhelmingly positive (96%+) Steam review score
Demo vs Early Access: what’s different?
The demo is a slice of the full game. Here is how it compares to the Early Access version launching September 10, 2026 (PT) — September 11 for regions on UTC+8:
| Feature | Demo (free) | Early Access (paid) |
|---|---|---|
| Price | Free | One-time purchase (same price EA and 1.0) |
| Pathways | One slice of the game | Two pathways at launch |
| Card pool | A subset (~dozens of tunnels’ worth) | ~300 explore and combat cards per pathway |
| Structure | 26 handcrafted tunnels ending at The Gloom | Full runs with more content planned across EA |
| Post-launch content | Frozen except for demo patches | New pathways, character classes, and quests added during EA |
| Duration | A few hours of content | EA planned to last 12–24 months of updates |
In short: the demo teaches you the dual-deck loop and gives you a self-contained dive toward The Gloom, while Early Access roughly doubles the pathways and multiplies the card pool several times over.
Does demo progress carry over to Early Access?
There has been no announcement about save or unlock transfer from the demo to Early Access. Treat demo unlocks as practice, not progress — the three unlockable playstyles and card knowledge will transfer to your brain, if not your save file.
Should you play the demo before buying?
Yes, for three reasons:
- It’s free and representative — the combat, explore deck, and eating mechanics are all in the demo.
- The rating is a strong signal — 96%+ positive across 1,000+ reviews on a demo is unusual.
- The game is unusual — if a first-person, no-blocking, eat-your-enemies deckbuilder sounds strange to you, the demo answers whether it clicks before you spend money.
If you enjoy it, Early Access opens on Steam on September 10, 2026 (PT). For how to get the demo and what platforms it runs on, see our where to play page.
Demo version note
This page describes the demo after the June 8, 2026 update. Early Access begins September 10, 2026 and will change content significantly — we will update this page after launch to flag what the demo still represents and what only exists in the full game.
Sources
- Steam — Shroom and Gloom Demo page (26 tunnels, Foresight, three playstyles, review score)
- Steam — Shroom and Gloom Early Access page (two pathways, ~300 cards per pathway, EA plan)
- PC Gamer — hands-on preview
- RPGamer — Early Access announcement coverage
Frequently asked questions
Is the Shroom and Gloom demo free?
Yes. The demo is a free download on Steam for Windows and macOS, and it carries your interest into Early Access, which launches on September 10, 2026 (PT).
How many tunnels does the Shroom and Gloom demo have?
The Steam demo page lists 26 handcrafted tunnels, spanning the game's biomes with spore-swarm enemies and a boss for each ecological region.
What changed in the June 2026 demo update?
Announced at PC Gaming Show on June 8, 2026, the update reworked the exploration system, added a new prologue, and introduced a new ending event where you reach The Gloom.
How popular is the Shroom and Gloom demo?
The developers' July dev log reported over 100,000 downloads, and the demo holds an overwhelmingly positive rating on Steam (96%+ across more than 1,000 reviews).
Sources
Facts on this page were verified on September 4, 2026 against the sources below. Community strategy claims are player-reported for the demo build and may change when Early Access launches.