The Big Cogwheel is the fourth upgrade. It is one of the Workshop-Lategame-Upgrades (WLU).
| Level | Cost | Mass |
|---|---|---|
| 1/10 | 100B/50an | |
| 2/20 | 25T/250as | |
| 3/30 | 100aa/100aw | |
| 4/40 | 50ab/50bd | |
| 5/50 | 2.5ad/2.5bk | |
| 6/60 | 100af/10bq | |
| 7/70 | 500ai/500by | |
| 8/80 | 25ak/250cf | |
| 9/90 | 100al/100cj | |
| 10/1a1 | 50an/50cp |
Workshop
Engine & Engine Upgrade • Cogwheel & Big Cogwheel •
Hammer & Hammer Upgrade • Money Machine Upgrade & Interest Rate •
Balloon Pump & Balloon Pump Upgrade & Balloon Speed •
Portal & Portal Amplifier & Charger Upgrade •
Mine • Selling Detail
Clockwork City
House & Tavern & Building Upgrade • Planet & Planet Upgrade •
Tower • Windmill & Bellow & Bellow Upgrade • Propeller •
Tax Collector & Tax Collector Upgrade • Crystal & Crystal Upgrade
