Clash Royale

Chests

Chests are the main source of getting cards, gold and gems. Gold is pretty much the main recourse used to buy and upgrade cards. You will receive gold from donating, Chests and achievements.

Now let's start with the chests.

Wooden chests.
Four wooden chests will be received at the start of the game. One of them will contain an epic card.
They will also unlock you a bunch of common and rare cards.
(Legendary cards are rarer than epics, while epics are rarer than rares, which are harder to get than commons.
You will only receive four wooden chests in the entire game.

Silver chests.
Silver chests are the most common chests you can get. They contain a bunch of commons, and a 30% chance of getting a rare. They will have a 5% chance of getting an epic, along with a 0.1% of getting a legendary.

Golden chests.

Golden chests are slightly rarer than silver ones, but contain a nice amount of commons, and definitely at least one rare.
They have a 8% chance of getting an epic, and a 0.3% chance of getting a legendary.

Magical chests.

Magical chests are really rare, but worth it. They contain a truckload of commons, a sack of rares, and one epic.
They have a 25% chance of receiving a second epic, and a 5% chance of getting a legendary.

Giant chests are extremely rare but they have massive amounts of commons and rare. There is a 20% chance of getting an epic, and a 2% chance of getting a legendary.

Super magical chests.

They are incredibly rare, but contain mountains of commons and rares, a shower of epics, and a 50% chance of getting a legendary!

That is not all though...

Free chests.
Free chests are obviously free, and have similar properties of a silver chest. They are received once every 4 hours, and you can stack up to two of them.

Crown chests.
Crown chests are earned after winning 10 crowns from battle, and contains twice as many cards as the golden chest.