AI Driving Game Demo Costs 160,000 Yen A Day To Run
The demo's cost curve is now the constraint on the game, not its reception: a demo popular enough to run up 160,000 yen a day in token fees is one the developer cannot keep giving away, which is why the planned product version folds AI costs into the purchase price.
Reporting from 1 source: Denfaminicogamer.
The Steam demo for Teaching My Little Sister to Drive, a voice-controlled game where the player coaches an AI little sister behind the wheel, has seen its player count grow 20-fold in a month. Daily AI token fees have reached 1,000 dollars, about 160,000 yen. Gemini hit its usage limit, so the game moved to OpenAI, where the little sister answers slowly and often misreads instructions. The developer has taken a bank loan and is weighing an early end to the demo.
The little sister in Teaching My Little Sister to Drive will not turn the key. Stages include a slalom built from landmines and giant trucks in pursuit, and the player gives driving instructions from the passenger seat by voice. Clips of players cursing at the screen after a crash spread the demo through streamers and VTubers in Japan.
The bill scales with that attention. The main service, Gemini, hit a usage limit error, and the switch to OpenAI brought slower replies, an AI-sounding manner of speech, and frequent misreadings of player instructions. Release is planned for around January 2027.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.