The announcement follows a Halloween demo the team previously released as a free fan project and marks the project's move from core development into polish and preparation for release.
Splatterhouse is a long-running Namco franchise that began as an arcade beat 'em up in 1988.
Monster Bath Games' Mega Splatterhouse is an unofficial, community-driven effort to recreate the title for Sega's 16-bit hardware, targeting the Mega Drive (known as the Genesis in North America) and retro collectors who follow homebrew console releases.
In a social post, the developer outlined the remaining work is primarily "clean up and tweaking," including palette adjustments and ensuring music and sound effects are properly implemented.
According to the update, those final tasks are intended to get the port as "close to perfect" as possible before deciding on a release path.
Monster Bath Games also confirmed its intent to pursue a legal release route rather than an unlicensed distribution.
The developer stated they plan to contact the rights holders and partners to explore an authorized release with additional extras.
In their words, they are serious about doing things "the legal way," and stressed that their priority is proper handling of the project rather than financial gain.
The developer expressed a clear reason for this approach: they want to prevent scenarios where the completed work is copied and sold without permission.
Paraphrasing their concern, they said that seeing the port appear for sale on marketplaces such as AliExpress — effectively being profited from by third parties — would be deeply disappointing after the effort put into the project.
With the project now feature complete and moving into finalization, the next milestones will be finishing the remaining levels and completing the audio and visual polish.
The team has indicated they will seek guidance on an official route to release while continuing development.
Fans of retro gaming and Splatterhouse will likely watch closely for further updates from Monster Bath Games and any response from Namco regarding a potential authorized release.