You can get more resources in these ways:
Command Center
- Build more resource buildings in your Command Center and upgrade them to higher levels. They produce lots of resources.
- Use Boost items to increase the production rate of resource buildings.
- Activate VIP privileges. The higher you VIP level, the greater production rate bonus your buildings will enjoy.
- Use Resource Items in your inventory.
- Buy resources in the store.
Battlefield Map
- Gather resources. There are many resource plots on the battlefield map. You can send troops there to gather resources.
- Plunder resources. There are many enemy Command Centers on the battlefield map. You can send troops to attack them and plunder resources.
Event
- You will get rich resources as rewards in many events.
Recharge
- Buy packs. It's a very good bargain: you can get tons of resource items in addition to Gold.