Moonsigil Atlas

Moonsigil Atlas

Released May 2026

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!

82% positive · 313 reviews
Not yet
Released, but still in active development
Medium confidence
Active Development
Not yet
Released, but still in active development
Medium confidence
Active Development

Where to buy

Prices in USD, as listed by each store.
Buying through an affiliate store helps support the site

Evaluation

Moonsigil Atlas launched on May 28, 2026 after approximately three years of development. The developer (Snake Tower Games) has been actively supporting the game since release. Shortly after launch, a balance and bugfix patch shipped on June 4, 2026 addressing feedback about the Act 3 boss difficulty. Then on July 29, 2026, the developers released a more substantial free content update adding over 30 new cards, a brand-new "Accumulate" mechanic, and new unlockable starting decks for each character — meaningful new gameplay content, not just maintenance fixes. At launch, the developers explicitly stated "we're not done," and their actions since have backed that up. The only paid DLC is a Supporter Pack released May 30, 2026, which is a cosmetic/support item rather than gameplay content. No specific future expansions or a roadmap have been announced, but the game has received real content additions in its first two months of release, establishing a pattern of post-launch development that is ongoing as of today (August 15, 2026).
Evidence
Developer shipped a free content update adding 30+ new cards, the 'Accumulate' mechanic, new starting decks for all three characters, and new artifacts — substantial new gameplay content less than two months after launch.
news post · Jul 29, 2026 source content shipped
high
Post-launch thank-you post confirmed a balance patch was already in progress and that the developers were actively reading player feedback, reinforcing continued engagement with the game.
news post · Jun 2, 2026 source development ongoing
medium

Content

1 of 1 released · no outstanding content

Media

Details

Publisher
Twin Sails Interactive
Achievements
31
Platform
Windows, Linux
Controller
full support
Steam Deck
Verified
Players
Single-player

About this game

Experience a roguelite deckbuilder without energy or action points: there's no limit to how many cards you can play, as long as they fit! Every card is a sigil you place on a grid, each with its unique shape, keywords, and effects - turning each combat into a tactical optimization challenge.

Create powerful synergies through rune positioning, adjacency, overlap, and persistent effects. Place the right sigil at the right time to trigger devastating combos. Beyond spatial strategy, Moonsigil Atlas is about creative deckbuilding: draw infinite cards to deal infinite damage or make ten copies of your strongest card.

A fully modular, player-driven upgrade system. Every card can be modified as you see fit: reshape them, inscribe runes, add keywords, and more. Spread power across your deck or invest everything into a handful of unstoppable cards. With tens of thousands of possible combinations, even the simplest cards can become build-defining centerpieces.

With 250+ cards, alternate starting decks, unlockables, forbidden cards, 3 characters with radically different playstyles and a fully randomized map, every run offers new, game-breaking possibilities.

Battle dozens of astral entities and three Titans that reshape the board itself. Hostile zones, shifting grids, and unique win conditions turn every encounter into a test of adaptation and mastery. A powerful deck is only half the battle…

Last evaluated Aug 15, 2026
Something about this evaluation looks wrong Report illegal or harmful content