Labs / History
Innovation Tree
Every invention stands on the ones before it. Research points build up over time — spend them to unlock the glowing inventions whose prerequisites you already have, and watch dependent branches light up. Flip on what-if mode to erase a single invention and see how much of history stalls behind it.
Era PrehistoryRP 24Spent 0Locked 20
What to try
- Which three inventions can you research first, before you've unlocked anything at all? What do they have in common?
- Race straight for the Engine. What is the shortest chain of prerequisites you must unlock to get there?
- Turn on what-if mode and skip Smelting. How many later inventions stall — and does the wheel's branch survive?
- Is any single invention a prerequisite for both the Engine and Electricity? What happens to the Modern era if you erase it?
- Switch to Patient pace. Does the order you unlock things in change, now that points are scarce?