Shop

From the shop, you can buy different things via credit card. Also, from this tab, you can collect free Gold daily. You can collect Treasure and Gifts when you enter a new Era, buy silver coins with gold coins, and buy contracts with money.

Daily gold
Each day, you can tap the top left corner for free gold. The first time, you receive the gold instantly, and after that you can watch videos for gold three more times, so 4 times a day in total.

The gold received is a multiple of 5, the lowest amount to receive is 5 gold, and the highest is 30, at least so far. Since the highest chance is to receive 5 gold, and for each bigger amount the chance is lower and lower, it is possible to have a very low chance to receive 35 gold.

Treasure Of The Era
Every time you enter a new era, you get some free supplies to help you in the new era. You usually receive new resources, Shards of Great People, CD time reductors, Clone licences and other stuff.

Silver
You can buy silver coins with gold coins, at a ratio of 1 gold to 50 silver. This ratio is more favorable if you buy more at the same time. This transaction is NOT a smart one, since gold is much more valuable than silver.

Gifts Of The Era
Similar to Treasure of the Era, once you enter e new era you can buy Gifts of the Era at a smart price. You get Clone Licences, genes and others, and the price is around the price of the same amount of Clone Licences, sometimes a bit higher, and sometimes lower. This is why I say it's a smart use of your gold coins.

Daily offers
You can buy daily: 100 Gold Coins, 2 Clone Licences, 5 Shards of Elizabeth I Great People, 10 Ad-free Coupon, for 1$. The first time you buy this, you will also get the ability to long-press in the camp instead of tapping repeatedly.

This is not very favorable ​​​​​, except for the first time, so you shouldn't buy this too many times because it can get expensive.

Monthly Contract
You can buy this contract for 5$ and it will be active for 30 days. You will get for the whole period: +1h Offline duration, Free One-click Deployment, +25% Recovery rate of overflow resources, +2 Market Resource Field; and daily: 300 Gold Coins, 1 Clone Licence.

This contract is quite favorable, especially when you compare it to the daily one.

Advanced & Supreme Contracts
You can buy the Advanced Contract for 10$, and it will be active forever. When you first buy it, you receive Zheng He Great People, but if you already have him, you get 20 Shards of him. You will receive daily: 100 Gold Coins, 2 Shards of Zheng He Great People, 1 Clone Licence and 2 Ownership Certificates.

You can buy the Supreme Contract for 20$, and it will be active forever. When you first buy it, you receive Darwin Great People, but if you already have him, you get 40 Shards of him. You will receive daily: 150 Gold Coins, 2 Shards of Darwin Great People, 1 Clone Licence and 2 ID Cards.

These contracts are very favorable, because you get rewards forever, and if you plan to play this game a long time, it is the most profitable one of them all.

Gold
You can buy gold for some unfavorable amount of money. Except for the cheapest one, the first time you buy it you get double the rewards.