BE Ninja Shows Camera-Read Hand Signs at Osaka Indie Games Summit 2026
The booth doubles as a data pipeline: a small recognition dataset grows each time a visitor plays, so exhibition time is training time for a game that cannot be played without a camera.
Reporting from 1 source: 4Gamer.net.
Solo developer Fortgs exhibited BE Ninja at OSAKA INDIE GAMES SUMMIT 2026, held October 3 and 4 at Congrès Square Grand Green Osaka. The title has been in Steam early access since June 2025 at 300 yen, and a July 2026 update reworked its main gameplay into real-time ninjutsu battles. Camera footage is read each frame, and AI judges which hand sign the player is forming. Fortgs says 10 hand signs appear in the game, 3 in the demo.
The demo ran on a monitor with a webcam mounted above it and no mouse or keyboard in the loop. Even the title screen asks the player to form a sign to begin. The opening sends the player off with a line about becoming a true ninja, then hands over to training.
A 3D hand model shows the target shape, and matching it in front of the camera stamps a seal on the scroll. Training runs about three rounds, with the tempo rising each time. Before the demo, visitors were asked to confirm whether their gameplay footage could be recorded and used for AI training.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.