HOW TO PLAY

1. Each trip goes to a time in history, like the Vikings in the year 900.
2. Tap the things that had already been invented by then (somewhere in the world) to pack them. Tap again to take one out.
3. Leave behind anything invented later. A light bulb on a Viking ship? Not yet!
4. Press ⏳ Travel! to check. Every thing you got wrong shows when it was invented, so you learn as you go.
5. No mistakes gets ⭐⭐⭐. Each trip stamps your passport and opens the next one.

PASSPORT STAMPED!