Monomagia Cantabile to Leave Steam and Three Other Stores at the End of September, Existing Steam Owners Keep Access

Monomagia Cantabile, MBA International's PC otome visual novel, is approaching the end of sales for its original release across several digital storefronts. Steam has set September 30, 2026 JST as the end of sales and distribution for both the game and its demo, while the official Monomagia account says animateGAMES, DMM and BOOTH will also stop selling it at the end of September.

The announcement does not represent a shutdown that makes existing copies unplayable. MBA International confirms that Steam users who already own Monomagia Cantabile will continue to be able to download, install and play it. Meanwhile, development attention is moving toward the larger new project Monomagia Cantabile — To My First Star.

Quick Summary

• Title: Monomagia Cantabile
• Japanese title: モノマギア・カンタービレ
• Type: otome game / romance novel adventure
• Original platform: PC
• Steam App ID: 2116800
• Steam developer: MBA INTERNATIONAL
• Steam publisher: MBA INTERNATIONAL
• BOOTH credits: development by Studio Sputnik, sales by MBA International
• Original PC sales start on official site: September 11, 2022
• Steam release date: September 12, 2022
• Steam language: Japanese only
• English support: unavailable
• Voice: partial voice
• Developer recommended age: 12+
• Romanceable characters: 7
• Event CGs: 6 per character
• Original scenario length: approximately 440,000 Japanese characters
• Number of endings: 17
• Structure: multiple endings affected by choices
• Additional system: card battles
• Card-battle basis: the card game Speed
• Premise: the protagonist awakens in another world where many things are decided through Monomagia
• Initial objective: travel with companions in search of a way home
• Steam end of sales: September 30, 2026 JST
• Steam demo: distribution also ending
• Existing Steam owners: can continue downloading
• Existing Steam owners: can continue installing
• Existing Steam owners: can continue playing
• Dedicated external server: not required
• animateGAMES: sales end at the end of September 2026
• DMM: sales end at the end of September 2026
• BOOTH: sales end at the end of September 2026
• DLsite: sales end at the end of December 2026
• Official Steam reason: product-catalog reorganization and concentrating development resources on new titles
• Official account explanation: the brand is being consolidated around its latest project
• Latest title: Monomagia Cantabile — To My First Star
• New-project status: in development
• Latest release target: late January 2027
• Provisional date: January 22, 2027
• Date caveat: may shift due to Nintendo review
• Target platform: Nintendo Switch
• New edition: adds scenarios and character endings
• Project goal: full voice for individual character routes
• Estimated new scenario length: roughly 800,000 Japanese characters
• Estimated new CG count: around 100 images excluding variations
• Crowdfunding: completed
• Amount raised: ¥3,255,000
• Crowdfunding target: ¥2,000,000
• Result: 162%
• Supporters: 37
• Franchise status: continuing through the newer project

Stores, Main Visual and Game Screenshots

Steam Ends Sales of Both the Game and Demo on September 30

Steam's official announcement provides the most specific deadline for the original release.

Sales and distribution of both Monomagia Cantabile and Monomagia DEMO will end on September 30, 2026 in Japan Standard Time. New users will no longer be able to acquire them through that storefront afterward.

The official Monomagia account expands that announcement to other stores. animateGAMES, DMM and BOOTH are also scheduled to end sales at the end of September.

One important exception is absent from the original screenshot: DLsite does not end sales in September. The official account says the old edition will remain available there until the end of December 2026.

The delisting schedule is therefore not identical across every storefront.

Existing Steam Owners Can Still Download and Play

For players who have already purchased the game on Steam, the end of sales does not remove it from their libraries.

MBA International specifically states that existing owners will remain able to download, reinstall and launch Monomagia Cantabile normally after September 30.

That remains possible because the game is a single-player experience and does not rely on dedicated external servers that would need to remain online.

In other words, this is an end-of-sales announcement rather than a server shutdown or termination of functionality for existing Steam owners.

That assurance is explicitly provided for Steam. Access and redownload policies on other storefronts remain subject to their respective platform systems unless the publisher issues additional clarification.

MBA International Is Consolidating the Catalog Around a New Title

Steam explains the discontinuation as a move to reorganize the product catalog and concentrate development resources on upcoming new titles.

The official Monomagia account describes the transition more specifically as consolidating the brand around its latest project.

That distinction matters because Monomagia itself is not being abandoned as an IP. A substantially expanded follow-up project is already in development under the title Monomagia Cantabile — To My First Star.

Its new title and logo were unveiled in August 2026. The project grew from plans to expand the 2022 game with additional scenarios, new endings for individual characters and fully voiced character routes.

The 2022 edition's delisting is therefore better understood as a catalog transition toward the new iteration rather than the end of Monomagia as a whole.

The 2022 Game Combines Seven Romance Routes With Card Battles

The original Monomagia Cantabile is an otome game that goes beyond dialogue choices alone.

Its protagonist awakens in an unfamiliar room before discovering a town that resembles the world of a picture book. In this world, many matters are decided through a card game known as Monomagia. She sets out with several companions while searching for a way back to her own world.

The game features seven romanceable characters, with six event CGs for each character according to the official BOOTH listing. Its scenario totals approximately 440,000 Japanese characters, while player choices can lead to 17 endings.

Its battle mechanic is based on the card game Speed, requiring players to place consecutively numbered cards faster than their opponent in order to deal damage.

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That system gives Monomagia a mixture of romance visual-novel progression and card battling rather than functioning entirely as a branching text adventure.

To My First Star Is Being Built on a Much Larger Scale

The follow-up development project was backed through crowdfunding that raised ¥3,255,000 from 37 supporters, reaching 162% of its ¥2 million target.

Its original goal was to expand the 2022 PC release with new scenarios, additional endings and full voice acting for the individual character routes.

The scope later grew considerably. Current official development updates estimate that the new edition will contain around 800,000 Japanese characters of scenario text and roughly 100 CGs excluding variations.

Its release schedule has also shifted several times. An April 2026 update moved the latest target to late January 2027, with January 22, 2027 presented as a provisional date.

The developer emphasizes that the date is not yet final because Nintendo's review process could move it by several days.

The project has also been retitled Monomagia Cantabile — To My First Star, reinforcing its position as the brand's new primary release.

Why This Matters

1) Delisting does not erase the game from Steam libraries

Players who already own the original release retain access to downloading, installing and playing it after sales end.

2) DLsite has a different deadline

Steam and three other stores stop selling the game at the end of September, while DLsite keeps a purchase window open through the end of December 2026.

3) The original edition is being retired while a new project is actively in development

MBA International directly links its catalog reorganization with concentrating resources on future titles.

4) To My First Star has grown far beyond the scope of the 2022 edition

A scenario previously measuring about 440,000 characters is being expanded toward roughly 800,000, alongside new endings, full-voice routes and around 100 CGs.

Game and Delisting Information

For now, the additional important information currently known includes:

• Monomagia Cantabile is a PC otome game
• the Japanese title of the original edition is モノマギア・カンタービレ
• Steam lists MBA INTERNATIONAL as developer and publisher
• the official BOOTH listing credits Studio Sputnik for development and MBA International for sales
• the official website dates the beginning of download sales to September 11, 2022
• Steam displays a September 12, 2022 release date
• the one-day difference comes from storefront dating and does not change its September 2022 release period
• the Steam App ID is 2116800
• the Steam edition supports Windows and macOS
• BOOTH sells the Windows edition
• Steam supports only Japanese
• Japanese interface support is available
• Steam lists Japanese full audio while official product information describes the game as partially voiced
• English interface and subtitles are unavailable
• the game is single-player
• Steam Family Sharing is supported
• a demo remains available before delisting
• Steam sales of both the game and demo end September 30, 2026 JST
• existing Steam owners retain download access
• existing Steam owners retain reinstall access
• existing Steam owners retain play access
• single-player gameplay does not require a dedicated external server
• animateGAMES is scheduled to end sales at the end of September
• DMM is scheduled to end sales at the end of September
• BOOTH is scheduled to end sales at the end of September
• DLsite is scheduled to end sales at the end of December
• the official PC price on several Japanese stores is ¥2,970
• the game has seven romanceable characters
• there are six event CGs per character
• the original scenario contains approximately 440,000 Japanese characters
• the original edition has 17 endings
• player choices affect ending branches
• individual routes are unlocked through romance events
• card battles use a system inspired by Speed
• MBA International cites product-catalog reorganization as one reason for ending sales
• development resources are being directed toward upcoming titles
• the official account says the brand will focus on its newest Monomagia project
• the latest title is Monomagia Cantabile — To My First Star
• the title and logo were changed in August 2026
• the new project adds scenarios and character endings
• individual character routes are planned to receive full voice acting
• the new scenario is estimated at around 800,000 Japanese characters
• the CG count is estimated at roughly 100 images excluding variations
• crowdfunding raised ¥3,255,000
• the campaign reached 162% of its goal
• there were 37 supporters
• the latest release target is late January 2027
• January 22, 2027 remains a provisional date
• Nintendo review may move that date
• this article has no Short/Reels block because the delisting announcement is not centered on a new video
• original product information is available through the Monomagia Cantabile Official Website
• official updates are available through Monomagia Cantabile Official X
• the Steam discontinuation announcement is available through Monomagia Cantabile Steam News
• the Steam edition is available through Monomagia Cantabile on Steam
• the animateGAMES edition is available through Monomagia Cantabile on animateGAMES
• the DMM edition is available through Monomagia Cantabile on DMM GAMES
• the BOOTH edition is available through Monomagia Cantabile on BOOTH
• the DLsite edition is available through Monomagia Cantabile on DLsite
• development of To My First Star is documented through the Official CAMPFIRE Project

Closing

The 2022 edition of Monomagia Cantabile is nearing the end of its sales period, with Steam removing the game and demo from sale on September 30 and animateGAMES, DMM and BOOTH following at the end of the month. Existing Steam owners keep access, while DLsite continues selling the game through the end of December.

The transition comes as development focus moves toward Monomagia Cantabile — To My First Star. The new version is currently targeted for late January 2027, although the developer's January 22 target remains provisional until Nintendo's review process is complete.