"Make a Genshin-class game": Opus 5.5 builds an anime open-world prototype in Godot (X video, Japanese)
🍺 イケハヤ@放置ゲー「月蝕綺譚」開発 (@IHayato) · 2026-09-24 · ai-made · 154,377 views
Made by AI
Model: Claude Opus 5.5 · Series: Agent-built game or 3D world (the video shows the result)
Evidence: X post (2026-09-24): 'Opus 5.5に / 「原神クラスのゲームを作って」 / と無茶振りした結果。 / うん……すっげーーーーここから頑張れば、まぁ……いや、まだ原神はキツイな……w / ちなみにGodotで作ってます。Unityはライセンスがなぁ……。'
Human role: Deliberately unreasonable prompt; built in Godot.
Pipeline: Opus 5.5 → Godot prototype → 1:09 capture
What's in the video
Description written by Gemini, which watched and listened to the whole video.
Summary This video presents mobile screen-capture gameplay of an anime-style 3D open-world game prototype built in the Godot engine, created with assistance from Claude Opus 5.5 as shared by developer @IHayato. The gameplay demonstrates third-person character locomotion, jumping, swimming, and environmental traversal across cel-shaded grassy hills, bridges, and rock formations with on-screen mobile touch controls.
What is shown
- [00:00 - 00:05]: Third-person view of an anime female character in a pink outfit walking along a dirt path on a grassy hill beside trees, with mobile UI controls visible (minimap at top-left, run and jump touch buttons at bottom-right, virtual stick at bottom-left).
- [00:06 - 00:15]: The character runs down an open green meadow dotted with cherry blossom trees toward a red traditional Japanese bridge.
- [00:16 - 00:23]: The player directs the character to run into shallow water, demonstrating swimming animations and water surface interactions next to the red wooden bridge.
- [00:24 - 00:31]: Traversal across and jumping onto the red arched bridge, then descending back onto the grassy plain and running along the stream.
- [00:32 - 00:50]: Exploration across rolling terrain with scattered boulders and stylized anime trees under a sunny sky.
- [00:51 - 01:08]: The player navigates toward stone ruins/structures embedded on a rocky hillside and attempts to jump and climb atop a vertical stone pillar.
Claims & numbers
- None (the video contains no voiceover, text claims, or benchmarks; it simply displays real-time prototype gameplay footage).
Notable quotes
- None (audio consists solely of background music and environmental ambient audio/silence, without spoken dialogue).
Assessment This is a real gameplay demonstration recording of an interactive 3D anime game prototype running on mobile hardware or touch emulation. No pre-rendered CGI tricks or artificial edits are apparent beyond typical game engine physics glitches and camera clipping common in early prototypes.
Lyrics & themes
- The video is entirely instrumental/without vocals or speech, featuring a quiet background ambiance without sung lyrics.
Lore & references
- The game aesthetic closely references popular open-world anime RPGs like Genshin Impact, including cel-shaded landscape rendering, lush green hills, floating clouds, traditional East Asian architectural motifs (torii gate visible in the distance at [00:04], red arched bridge), and typical action-RPG mobile control interfaces.
Visual style & craft
- Real-time 3D game engine rendering (Godot Engine) utilizing cel-shaded / toon shaders, low-poly terrain meshes, billboard foliage, and an anime character rig with standard run, jump, idle, and swim animation states. The footage shows standard mobile touch UI overlays and normal real-time rendering artifacts (such as camera grass-clipping and rough terrain collision).
Described by gemini-3.8-flash on 2026-10-05 from the video's audio and frames.