A very questionable day at the office.

Grand Theft Grandma is a fictional browser game about a phone call, an unlikely cover story and a customer who has heard it all before.

Choose one of 21 case files, read the brief and try to earn the fictional details before the caller hangs up. Grandma’s replies are newly generated, with game rules controlling trust, objectives and when she will share a clue. She can remember what you said, follow a short detour about her family and call out a changing story.

Use your microphone for a spoken conversation, or open the in-call text box. No game installation or player account is needed. The fixed character voice is generated on your device; the browser prepares and caches voice files, so first visits can take longer than repeat visits. Supported devices, microphone recognition and free AI availability affect play.

This is independent satire for adults. All characters, money, institutions, card numbers and codes inside the game are invented. You do not make real phone calls or access real accounts. Optional extra cases involve a real one-time purchase.

Made by Stack Dating Inc.

For questions about the game, contact rianjulka@stackdating.com. Read our privacy notice and terms.