Steam app 3284290 · updated 12 Sep 2026, 22:14 UTC
The deckbuilding roguelike with no energy – play cards using physical space! Slot cards together, manipulate the shape of your cards, and create overpowered combos to break the game!
288 hourly samples, with the daily peak drawn over them. Weekends are shaded.
4 months, June 2026 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 172 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 116 hourly samples. Each dip is a night. Weekends are shaded.
Moonsigil Atlas was released on 28 May, 2026.
| Language | Full audio |
|---|---|
| English | |
| Russian | |
| Japanese | |
| Korean | |
| Simplified Chinese | |
| French | |
| German | |
| Spanish - Spain | |
| Portuguese - Brazil | |
| Spanish - Latin America | |
| Traditional Chinese | |
| Polish |
A blank audio cell means full audio was not marked in the returned language list.
Launch Trailer
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Release Date Announcement Trailer
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Gameplay Trailer
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Demo Launch Trailer
Watch on Steam31 achievements in total.
18 developer announcements, Jan 2025 to Jul 2026 · times in UTC
Hello Sigilwrights! We've just launched an update featuring new starting decks and the new Accumulate mechanic, as well as a few bugfixes and quality-of-life changes!New Starting Decks and "Accumulate"Each character now has a new starting…
snaketowergamesHello Sigilwrights!We've just pushed a small balance and bugfix update that includes an adjustment to the Act 3 boss, as well as fixes to a few rare bugs. Here is a list of everything that changed:ChangesThe Stargorger Titan is less…
Patch notesAttention Sigilwrights,Thank you for supporting us through the Moonsigil Atlas launch! Over the weekend we have reached over 100 Steam reviews with a Very Positive rating, and we were featured on the New & Trending list for several…
snaketowergamesAttention Sigilwrights, Moonsigil Atlas is available now!Don’t forget that there’s a 10% launch discount for anyone who buys the game shortly after launch. And even though the free demo has been retired, you can still transfer your demo…
snaketowergamesAttention, Sigilwrights! With Moonsigil Atlas releasing on May 28th, we have included some additional details about the game launch so you know what to expect.Launch DetailsTime and Date: May 28 at 10am EDTPricing: 20 USD / 20 Euros (with…
snaketowergamesRelease is approaching, but we're still sneaking in some QOL improvementsWe're getting close to our May 28th release, but we're still hard at work further improving platform support and squeezing in a few more quality-of-life…
snaketowergamesBig News Today: Moonsigil Atlas launches on May 28th 2026!After three years of development, countless builds, and endless R&D iterations to get every detail right, we finally have it: our release date.We promised a June release, but you…
Julien-TSIWe’re excited to share a major milestone for Moonsigil: the game is officially launching in June 2026!🎉 We’re also proud to be part of Turn-Based Thursday Fest, hosted by the Turn Based Lovers YouTube channel at 6 PM CET.🎬 Check out the…
Julien-TSIHello Sigilwrights,Moonsigil Atlas has been featured in the Tiny Roguelikes festival, running now through February 14th! If you haven't had a chance to check out our demo yet, now is a great time.If you'd like to follow along with…
snaketowergamesThe October 2025 edition of Steam Next Fest just started, with over 2000 upcoming games participating with playable demos! Check out Moonsigil Atlas's updated demo this week and play with some of the new features:Artifacts that give…
snaketowergamesWe have just made a major update to the Moonsigil Atlas demo! Here are some of the new things you can encounter in-game:Preliminary Localization to Simplified Chinese, Japanese, Korean, and Russian. There may still be issues as we work with…
snaketowergamesThe 2025 Tiny Teams festival, hosted by Yogscast Games, has just started, and will run until August 14th! With it comes a huge update to the Moonsigil Atlas demo, and some exclusive content you might see on Twitch streams in the next…
snaketowergamesWe are very excited to announce that Moonsigil Atlas will be featured in the Tiny Teams festival next week, hosted by Yogscast Games! There will also be a huge update to the public demo on August 7, the first day of the festival. Here's…
snaketowergamesWe are excited to announce that the Moonsigil Atlas demo is out now! This version of the game has over 100 cards, two playable characters, and a plethora of enemies to overcome, including the first of the three astral titans. If you want to…
snaketowergamesOn May 14th, you'll be able to play the free demo for Moonsigil Atlas. We've been working toward a public demo for months now, and are excited to bring an early version of the game into your hands soon. How to Support Us If you would like…
snaketowergamesThe "coming soon" page for the Moonsigil Atlas Demo just went live! You can't play the demo quite yet, but we're excited to share more details with you. What's in the Demo? Two playable characters (three characters in the full game) One act…
snaketowergamesWe've just made the first update to the Moonsigil Atlas playtest. This update adds new map encounters, two new card keywords, and several new cards. The new version also includes bug fixes, balance changes, and quality-of-life improvements.…
snaketowergamesWe're currently accepting playtest sign-ups for Moonsigil Atlas! About the playtest This will be an early build of the game, and will not include all of the final characters, cards, and enemies. The playtest build will be distributed…
snaketowergamesEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Moonsigil Atlas - Supporter Pack | WindowsmacOSLinux | 30 May 2026 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | Moonsigil Atlas.exe | windows 64 | ||
| Launch | Moonsigil Atlas.x86_64 | linux 64 |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocalLow | SnakeTower/Moonsigil Atlas/{64BitSteamID} | *.sigil and below |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG