Development Journal

After years of iteration, Spaceship Adventures has found its true north: Hoshi no Isan (星の遺産 — Children of the JAXA Legacy). A Japanese-aesthetic space visual novel and crew RPG set aboard a JAXA Heritage Ship. This is the game we've been building toward — and the one we're committed to finishing.

The Yamabiko (ヤマビコ — echo of the mountain) is the JAXA Heritage Ship — a living museum of Japan's greatest space missions. Every corridor tells a story. Every compartment honors a real spacecraft. Here's how we're designing it.

spaceshipadventures.com has been fully rebuilt to reflect the Hoshi no Isan pivot. New dark theme. New pages. New navigation. Everything aligned with the Japanese space visual novel we're actually building.

How do you design a ship that functions as both a living space and a museum? After establishing core architecture, we moved into Phase 2: creating the fully explorable multi-deck interior. This is where the philosophy — the ship itself is the story — truly comes to life.

Walking through the initial Unreal Engine 5 project setup and the core Blueprint architecture that will serve as the foundation for the entire Hoshi no Isan experience — from FPS exploration to the visual novel trust system.

The vast expanse of space has long captivated humanity's imagination, and video games have become one of the most powerful mediums to explore that fascination. A look at the genre, and where Hoshi no Isan fits within it.