Key information
The AI-driven game Teach the Sister to Drive on Steam recently faced unexpected AI service costs due to a rapid increase in players, with the development team stating they had to apply for a bank loan to keep the demo running.
The game centers on players using a microphone to give voice commands to the sister, who operates the steering wheel and pedals. The team utilizes Gemini AI paired with voice recognition, and recent updates added emotional expressions and hairstyle options.
Due to quota limits on Gemini, the team increased reliance on an OpenAI backup model, though players noticed issues like overly long or unnatural responses. The team is also addressing execution errors, such as turning the wrong way, while noting that mistakes are part of the learning process.
With the demo player count surging over 20 times, daily AI service fees exceeded 1,000 USD. The team faces challenges with Google Cloud usage tiers and financial pressures, noting they might end the demo earlier than expected if costs persist, though the demo remains available on Steam and is slated to appear at the Taipei Game Show.


