Discover the Unique Physics Simulation Game 'Legacy Code' from Kodansha Game Lab

Unveiling 'Legacy Code'

Kodansha Game Lab has recently launched the Steam store page for their innovative physics simulation game, 'Legacy Code', and is now accepting wishlist registrations. This game invites players into a world where they can combine a variety of components—ranging from biological materials to inorganic parts—to create mysterious creatures known as Mekanimals. With its unique Marionette Engine, players can explore unpredictable movements, as even the creators of the Mekanimals may be surprised by their creations’ behaviors.

What is 'Legacy Code'?

At its core, 'Legacy Code' is a creative simulation game that allows players to construct Mekanimals from a collection of junk. Players can freely mix and match various parts including heads, arms, legs, and motors. This results in Mekanimals that not only look different but also exhibit unique movements based on their composition. The game's standout feature is its proprietary physics simulation system, which ensures that any bizarre combination will function properly. Often, a planned Mekanimal may end up moving in an entirely unexpected manner, adding an element of surprise to gameplay. This unpredictability forms the foundation of the gaming experience.

The Game Cycle: Build, Battle, Collect

The primary game cycle revolves around three actions: Building, Fighting, and Collecting. Players start by creating their Mekanimals, then engage in adventures where they bring their creations to life, and finally, collect new parts by defeating enemies. As they gather parts, gamers can customize their Mekanimals and challenge tougher opponents, continually enhancing their creations and expanding their capabilities.

Expanding the Adventure

Players can steer their Mekanimals through diverse environments—deserts, snowy mountains, and sometimes even ruins—facing off against various foes. Victorious battles yield valuable parts from defeated enemies, enabling players to further upgrade their Mekanimals in both size and strength. The ability to add legs and reach further with arms grows as they progress, allowing them to take on former challenges with newfound power.

With each iteration, a humble collection of junk transforms into towering giants. The cycle of building, battling, and collecting leads the Mekanimals to become a unique creation for each player, enhancing the game’s personal touch and encouraging deeper engagement.

Endless Combinations

Mekanimals can be comprised of an eclectic mix of parts—anything from doll heads and character goods, to vacuums, TVs, puzzles, dentures, chains, and even cacti. Each component has its own appearance and movement quirks, enabling unprecedented combinations that significantly alter both the Mekanimal’s form and behavior. This nostalgic yet strange assortment of junk breathes new life through the players’ creative endeavors.

A Finalist at Tokyo Game Show 2026

'Legacy Code' was recently recognized as one of the top eight finalists in the Sense of Wonder Night 2026 at the Tokyo Game Show. This competition seeks to uncover game ideas that evoke a sense of wonder, which 'Legacy Code' undoubtedly embodies with its unique concept. Out of more than 1,500 submissions this year, it was selected to participate alongside other innovative titles, with creators presenting their projects live. The game's intriguing premise of creating unpredictable beings from scrap was highly regarded by the judges, solidifying its finalist status.

About the Creator

The creator behind this project, 127号室X, has developed a unique physics system known as the Marionette Engine, which gives rise to whimsical and unpredictable Mekanimals. 'Legacy Code’ marks their debut as a game developer.