What are the Resources?

In War Wings there are four kinds of resources, these are gold, silver, RP (research point), and free RP and the amount of each you have is displayed at the main interface.

Gold

Gold is purchased at the store by using real money. It can be used to buy supplies, special ammo, rockets and bombs, sighting devices, paints, and Gold Planes. You can also use gold to purchase Premium Accounts and convert Silver, convert Free RP, and to buy supply crates and packs. Gold and silver can also be used to buy game props.

Silver

The silver that you earn can be used to buy supplies, special ammo, rockets and bombs. Silver can also be used to purchase and upgrade planes (provided you have reached the required level and completed the previous step(s) in tech tree). If you do not have enough silver to do these things you can always use gold to fill up (Exchange rate: 1 gold = 360 silver).

RP

RP is used to research a certain plane and Free RP is used to research any aircraft. Free RP can replace RP in researching planes.

Free RP

Free RP is earned in battle at a rate that equals to 5% of the RP you earned from each battle. You can convert RP of premium planes to Free RP by using gold, which you may convert 45 RP with 1 gold to 45 Free RP.