How to play
- Five inventions a day, the same five for everyone.
- Drag the ruler, scroll, or use the arrow keys (Shift jumps 10 years) to pick the year. The ±10 and ±100 buttons jump faster.
- Up to 100 points each, 500 a day. Exact = 100, within 2 years = 90, 5 = 75, 10 = 55, 20 = 35, 35 = 20, 60 = 10, further = 0.