Tip 1
This is Steam app 3285880 by Gentle Giant — not Spiritfall, and not a cafe that shares the nickname.
How to play
What is MONOMOON?
Keyboard moves you. The mouse moves the moon. Doors open when a clue makes sense.
MONOMOON is a Adventure · puzzle · Metroidbrainia · single-player from Gentle Giant, released November 11, 2026 on Windows PC (Steam). In MONOMOON, the way forward is reserved for the knowing and the daring. Guided by moonlight, you’ll uncover hidden truths and wander through a tiny and mysterious open world. Steam app 3285880.
Gentle Giant shipped MONOMOON on Steam on November 11, 2026. You explore a small hand-made open world in any order. Progress comes from noticing symbols, testing the moon, and writing rules into the Tome — not from a combat upgrade tree. About ten hours can reach a credits layer. Hidden routes remain after that. Steam lists achievements, Cloud, Family Sharing, and full controller support. Keyboard and mouse is the recommended way to play.
This MONOMOON wiki keeps Tome pages, relics, and area names in one place. Use a MONOMOON guide for the first hour, then come back when a red door or the moon will not cooperate. It is not Spiritfall, and it is not a cafe that shares the nickname. About 98% positive on Steam (launch-window snapshot). Verified November 13, 2026. Not affiliated with Gentle Giant or Gentle Giant.
| Title | MONOMOON |
|---|---|
| Developer / publisher | Gentle Giant |
| Platform | Windows PC (Steam) |
| Released | November 11, 2026 |
| Steam app | 3285880 |
| Mode | Single-player |
| Price | ~$11.99 USD (check live Steam) |
| Input | Keyboard and mouse recommended · controller supported, not ideal |
| Playtime | About 10 hours to a credits layer, then hidden routes |
| Features | Steam Achievements · Steam Cloud · Family Sharing · Full controller support |
| Last verified | November 13, 2026 |
MONOMOON Guides
This MONOMOON wiki plus the MONOMOON guides below cover moon aim, puzzles, the walkthrough, and relic names. Open the card that matches the stuck step.
Beginner
Keyboard, mouse moon, roll, checkpoint, then a clue before a red door.
Moon aim
Light radius, flowers, and when to lower mouse sensitivity.
Puzzles
Red doors, swamp elevator, music clam, and softlock checks.
Wiki hub
Tome, areas, relics, achievements, and creatures.
Relics
Eight secret finds. Purple path for mirror and fruit.
Walkthrough
Observatories before red doors. Light spoilers only.
Get started with MONOMOON
A MONOMOON guide for the opening hour: keyboard, moon, roll, checkpoint, then a clue before any red door.
- 1
Move with the keyboard
Walk, jump, wall-jump, and roll. The roll is recorded in the Tome and does more than one job.
A missing jump upgrade is often a roll you have not understood yet.
- 2
Aim the moon with the mouse
Light a dark patch. Flowers react to the moonlight radius. Lower sensitivity if a bloom will not catch.
Mouse aim is the recommended feel. A pad hold to keep the moon active is Unverified.
- 3
Find a checkpoint
Death sends you back to the last checkpoint. The map can also return you there.
An inactive checkpoint is a landmark, not a failure.
- 4
Read the Tome
Pages store symbols, numbers, and rules for red doors and the music clam.
Pages 12 and 13 are reported on the far-right path to the rightmost telescope.
- 5
Visit an observatory
Telescopes feed area clues. Several red doors make more sense after you have used them.
Players mention three or four observation points. Trust the one in front of you.
- 6
Leave a red door until the clue is in the room
The bottom-right door ties to rabbit marks and the rabbit tower. A key you already hold may be in the current room.
Hotfix 1.0.08 fixed a right-side spot that only looked like a softlock.
Quick tips
Tip 2
There is no promo-code list. Buy the game on Steam.
Tip 3
If a path feels locked, look for a missing symbol before you call it a softlock.
Tip 4
Lower moon sensitivity when a flower will not sit inside the light radius.
Tip 5
Hotfix 1.0.08 fixed a right-side map false softlock, a stuck lilypad edge, pressure plates, and high-FPS goat interaction.
Tip 6
Hotfix 1.0.10 adds a VSync toggle and fixes more softlocks plus a crash when you die on a bad collision.
MONOMOON world layers
The world is small and non-linear. These bands are the regions public notes already name.
Surface and ruins
Open routes plus a dangerous underground ruin network.
Dark well
Animals live in a dark well. Moonlight is how you read the room.
Swamp elevator
A light grid and map numbers. Hover the moon icon on the map to change the digits at the bottom.
Underwater clam
Four music parts, two notes each. Cracks show the joins. Rotate before you trust a note.
Purple path
Lower-middle map. Mirror and Fruit pass through here. A 4×4 slider puzzle exists; it is not confirmed as the same region.
Rabbit tower
Bottom-right red door, rabbit marks, and telescope pages.
Knowledge, not a key tree
Flame braziers cannot be lit at the start. A later item lights them across the map. If a route is dark, you may be early, not stuck.
MONOMOON moon, Tome, puzzles, and relics
Six systems you can name on day one. Empty cells stay empty until a capture exists.
Mouse
Moon
Position, radius, flowers, and hidden marks.
- Keyboard still moves you
- Sensitivity matters
Pages
Tome
Roll, symbols, numbers, and door rules.
- Pages are collectible
- Far-right pages 12 and 13
Doors
Puzzles
Red doors, elevator digits, clam notes, purple sliders.
- Conflicting public answers stay unpicked
Late
Relics
Eight secret finds: mirror, fruit, hourglass, skull, and four more.
- Purple path for mirror and fruit
- Scales machine solve is not public
Map
Areas
Wells, swamp, underwater, purple, rabbit tower.
- Checkpoints on the map
Steam
Achievements
Fifteen Steam names. Many are secret. Percents are a third-party snapshot.
- Sea, Earth, Sky emblems
- Relic finds and the MONOMOON ending row
MONOMOON progress checkpoints
Session goals, not a timer. Skip a box only when your save already shows it.
- 1
First flower
Moonlight opens a bloom.
- Radius, not a click spam
- Lower sensitivity if it jitters
Checkpoint
A flower has reacted to the moon.
- 2
First Tome page
The roll, or another rule, is written down.
- Open the book
- Compare a symbol you saw outside
Checkpoint
You can point at one filled page.
- 3
First observatory
A telescope has been used.
- Numbers may land on the map
- More than one site exists
Checkpoint
You can name the site you just finished.
- 4
First red door with a full clue
The marks in the room match a Tome page.
- Do not force a door with an empty page
- Rabbit tower is one of the doors
Checkpoint
You can say which clue opened it.
- 5
Flame braziers
Early on you cannot make fire. Later, one item or ability lights the braziers.
- Come back
- Not a combat pickup
Checkpoint
You have lit a brazier, or you know you are too early.
MONOMOON updates
Launch and the two hotfixes below. These cards do not link to other pages.
1.0 launchNov 11, 2026
- MONOMOON ships on Steam for Windows
- Gentle Giant · app 3285880 · about $11.99 USD
- Single-player puzzle · no combat encounters
Hotfix 1.0.08Nov 2026
- Performance on low-end PCs and Steam Deck
- Goat interaction at high frame rates
- Stuck lilypad edge and stuck pressure plates
- Right-side map spot that looked like a softlock
Hotfix 1.0.10Nov 2026
- More softlock fixes
- VSync toggle in graphics settings
- Crash when dying on a bad collision
- A few visual fixes
Frequently asked questions
- Does MONOMOON support a controller or Steam Deck?
- Steam lists full controller support. Keyboard and mouse is the recommended way to aim the moon. A pad hold to keep the moon active is Unverified. Hotfix 1.0.08 called out Steam Deck performance. Details: controls.
- Are there MONOMOON codes?
- No. This is a buy-to-play Steam puzzle. There is no code list and no redeem page on this site.
- Where is the official MONOMOON Discord?
- Invite discord.gg/TzwwcUNW3n (https://discord.gg/TzwwcUNW3n). The server name is MONOMOON || Spiritfall. That second title is another Gentle Giant game — this site does not cover it. The link also sits in the footer.
- Is MONOMOON a combat game?
- No. Official copy stresses that there are no combat encounters. Danger is falls, traps, and a wrong read of a puzzle.
- Am I softlocked or missing a clue?
- Hotfix 1.0.08 fixed a right-side map spot that looked like a softlock, plus a lilypad edge and pressure plates. Hotfix 1.0.10 fixes more softlocks. If the patch is in and the door still waits, read the Tome. Notes: puzzles.
- Where do I play MONOMOON?
- Steam store for Windows. About $11.99 USD (a launch discount may apply — check the live Steam price) Studio: Gentle Giant.
- What is the core loop?
- Move → Light → Record → Observe → Open. First session: beginner.
- Is MONOMOON the same as Spiritfall?
- No. Spiritfall is another Gentle Giant game. The shared Discord name does not make this a Spiritfall guide.