Wood is the second resource that the kittens have access to. It is created by refining catnip. It can eventually be auto-generated by woodcutters.
- After you gather 100 catnip, you gain access to Refine Catnip, which can initially refine 100 catnip into 1 wood.
- After you acquire kittens, you can assign kittens to be Woodcutters, which initially produce 0.018 wood per tick. The Mineral Axe, Iron Axe, Steel Axe, Titanium Axe, and Alloy Axe upgrades increases woodcutter efficiency by 50-75%.
- After you research Construction, you can then build Lumber Mills, which increase wood production by 10%.
- The Reinforced Saw, Steel Saw, Titanium Saw, and Alloy Saw upgrades increases woodcutter efficiency by 15-20%.
- After you unlock Trade, Lizards will purchase 1000 minerals for a certain amount of wood dependent on the season and number of Trade Posts.
- You use wood to build most Buildings, and several upgrades.
- You can craft 175 wood into (initially) 1 beam. This can be partially automated with a Steamworks.
- After you research Metal Working, you can then build Smelters, which consume .05 wood and .1 minerals per tick to produce .02 iron initially, and later .001 gold and .005 coal.
- After you discover Griffins, they will purchase 500 wood for a certain amount of iron dependent on the season and number of Trade Posts.
- The initial max wood storage is 200.
- After you research Agriculture, you can then build Barns, which increase storage by 200. The Expanded Barns, Reinforced Barns, Titanium Barns, Alloy Barns, Concrete Barns upgrades allow Barns to store 75-100% more resources.
- After you research Construction, you can then build Warehouses, which increase storage by 150.
- After you research Navigation, you can then build Harbors, which increase capacity by 700.
- After you build a Harbor, you can also build ships, which increase Harbor capacity by up to +1575, if you have the Expanded Cargo workshop upgrade.
- The Expanded Cargo upgrade gives a 1% bonus to the Harbour capacity for each Trade Ship you build. This effect has diminishing returns, up to a limit of 225%.
- After you research Rocketry and complete Moon Mission, Piscine Mission, and T-minus Mission you can build Cryostations, which each increase storage by 200K.