Full Metal Daemon Muramasa is a 2009 visual novel by Nitroplus (Steins;Gate, Saya no Uta, Kimi to Kanojo to Kanojo no Koi, Super Sonico, etc). It was officially localized in 2021 and was set to come out on Steam.

Unfortunately, the game got banned from Steam for no apparent reason, as well as many other games. Although the game features plenty of graphic content, it is no more prevalent than many triple A games on the store, not to mention that other translated Nitroplus' titles have made it to Steam with no issues at all.

Muramasa is sold at GOG perfectly fine, so there's virtually no reason for Steam to reject it.

The content in Muramasa is no more explicit—in terms of violence and sexual content—than several other games on Steam. There is no justification for this ban, and just like the recent case with Chaos;Head Noah, it was just the consequence of inconsistent and biased policies.

The worst part, however, is that unlike Chaos;Head, Muramasa actually went through various talks to get allowed on Steam. The localization staff at JAST prepared a Steam build with almost none of the suggestive content and decided various changes alongside Valve to submit the version they would have tought ideal for the store. As you can already tell, this didn't end well.

They followed all of Valve's recommendations and the game still got banned. It doesn't take a genius to see how this is a terrible practice and unfair to the developers and publishers.

You might be wondering if this campaign will work, and I think we can achieve it as a community. The recent campaign for Chaos;Head Noah proved that these unfair decisions can be reversed, so there's already a precedent.

Dear Valve,

We are writing to you to express our disappointment in the decision to reject Full Metal Daemon Muramasa from the Steam marketplace. This game is a well-written visual novel with a great deal of artistic merit. We believe that it deserves to be available on the Steam marketplace, and we urge you to reverse your decision.