This is the first developer diary for Thriller Paradise: LIMINAL: Within.
We spent a long time thinking about where to begin. In the end, we decided the best place to start was by being honest about where the project stands today.
The Steam store page currently online, our first trailer, and the playable demo we completed internally all represent an earlier iteration of the project. After releasing the trailer, we decided not to continue in that direction. Instead, we chose to rework both the narrative and the visual direction.
As production progressed, one thing became increasingly clear: this version was not telling the story as well as it needed to.
LIMINAL: Within officially entered production in March this year. We are not a traditional game studio. Our team consists of more than ten people working across directing, writing, art, and other disciplines, but we all have one thing in common: a genuine love of games.
Of the many story arcs in Thriller Paradise, LIMINAL: Within has always been one of our favorites. Its popularity was what first caught our attention, but what ultimately made us choose it was its exploration of inner conflict—a confrontation with the self. When the enemy comes from within, and every branching thread ultimately leads back to the same source, the creative challenge becomes far more compelling.
So when we acquired the rights to develop an interactive FMV adaptation of Thriller Paradise, we chose LIMINAL: Within almost immediately. At the time, an interactive FMV game also seemed like the most natural way for us to take our first step into single-player game development.
Our team has years of experience in content and video production. Looking back, we still believe the format was the right choice. What we underestimated was the difference between making a film that audiences could interact with and creating a game that players would genuinely want to see through to the end.
Over the following months, the script went through two major revisions. The second version made it through our entire production pipeline, resulting in a fully playable demo.
But as we continued production, the director and the rest of the team reviewed the project and concluded that the problem lay in the story’s underlying structure. It was not something we could fix by adding a few scenes or rewriting a handful of lines. Continuing with that version might have allowed us to finish the game more safely and stay on schedule, but it was unlikely to produce something we could truly be proud of.
So we stopped.
The completed script now needs to be rewritten. Existing character and environment designs need to be reworked, and some footage and gameplay content will need to be produced again. This decision has put us under greater time pressure, but we would rather accept the cost of starting over than spend the time we have left pursuing a direction we no longer believe in.
This is the third major iteration that LIMINAL: Within has undergone.
The new version will refocus the story around a clearer central mystery:
When a game begins to mirror reality, is the game itself killing people—or is there something darker in the human heart? Shuichi Hirata will inevitably be drawn into the maelstrom, forced to find his way forward alone.
With this question at the center, we have reworked the case itself, the relationships between the characters, and the connection between the game and reality. Players will still make choices at crucial moments, but more importantly, we want those choices to take place within a convincing story—one that players will genuinely want to keep following.
The changes extend beyond the script and visual design. We are also experimenting with a new gameplay concept that did not exist in the previous version and is closely tied to the story itself. We will share more once it is ready to be shown.
At the time of writing, the new script has progressed to Chapter Three, while the art team is simultaneously redesigning the characters and environments. The Steam store page, promotional materials, and the game itself will all be updated gradually as production on the new version moves forward.
Following the release of our trailer, we also read the discussions on Heybox and other online communities. The most common concern was our use of AI.
Many readers of Thriller Paradise are no longer willing to accept another adaptation solely on the strength of phrases such as “officially licensed,” “faithful to the original,” or “the team worked hard.” This caution is understandable, particularly after the AI-generated content audiences have encountered in the past.
These discussions were not the sole reason we decided to rewrite the script, but they did remind us of something important: if we want players to take this game seriously, explaining our intentions is not enough. People need to see how the game is actually being made, and they deserve to know exactly where AI is being used in the production process.
The new character and environment concepts will be redrawn by hand by our art team. The game’s script, dialogue, programming, voice acting, and music are also created by the team. AI tools are used only during the video-generation stage, and the game contains no real-time AI-generated content.
In practice, we have also been working to strike the right balance between artistic presentation and production technology. Above all, our goal is to deliver the best experience we possibly can. By using hand-drawn concept art as the foundation for our video production, we can maintain much greater control over the characters, environments, and overall visual style. The final results are also far closer to what we genuinely want the game to look and feel like.
For this reason, we have restructured our production pipeline and are investing significantly more time and effort in visual development and pre-production.
Going forward, we will continue documenting this process through our developer diaries. We plan to share the redesigned characters, environment sketches, story changes, challenges encountered during production, and the development progress of the new demo as each reaches a stage where it is ready to be shown.
This diary is only the beginning. From here on, we will do our best to document the project’s changes and development progress openly and honestly, so that everyone who cares about the game can watch it take shape, one step at a time.
Thank you for taking the time to read this far. We know that what we have shown so far does not yet represent the complete experience we want to deliver.
Thriller Paradise is our first step into game development, and we may face many more challenges in the future. But our original goal—to create games that people will love—will never change.
Thriller Paradise: LIMINAL: Within is still scheduled to launch on Steam this fall.
See you this fall.