Gunner Mode

Gunner Mode is a shooter mode where you pick Gunners to fight a bunch of creeps until killing the specific amount. You are getting gold and random rewards for the win. Every time there is a 100% chance to meet two special mobs who're carrying a gift box with the purple health bar and a 30 seconds timer on it - these mobs give you additional rewards (as long as mobs are coming out eventually and gradually there might be a glitch when "Gifted" mob is coming out too late with only 5-10 seconds timer on it).

It is similar to the shooter mode in Cartoon Wars 2: Heroes.

Rewards
At some rate (unknown formula of pop-up) You can enter in a Treasure Chest Level. These levels are slightly harder than normal but You will receive a Treasure Chest after the win. Opening costs 1 GUNNER TREASURE CHEST KEY. Those keys can't be farmed, You receive only 3 keys every day, but if You are willing to open more than 3 Tresure Chests - You are good to go for 5 Green Crystals. Treasure Chests always consist 3 rewards and they are pretty tasty out there, but I still can't recommend You to spend Green Crystals on it.

Possible Treasure Chests Rewards
One more interactive stuff in the normall Gunner Mode is Bombing. On each level there is 100% chance to get one "Red Button" from one random mob (it will pop out from its dead body and stay on the ground for about 7 seconds). You need to collect 5 of these "Red Buttons" (but sometimes (freaking often) "Red Button" may pop out from the mob and jump off the bounds of the screen making impossible to reach it) and tap on "Request Support". Bombing damage is depends on Your Gunner's current damage, it will cover whole maps with bombs and than will drop 7 gift boxes. You will get some useful in-game stuff like Heal or Polymorph or some minor rewards direct in your Mailbox as Gold, Swords, King of Gunner Tickets, Purple Crystals or Puzzle Pieces.

Running ahead and anticipating Your question "Do I have to spend Green Crystals for other Gunners slots", the answer is "Yes. Definitely. But do it wisely. If You have only two 5* gunners don't buy second slot upgrade for 5* gunner."

Prices
3 STARS GUNNER SLOT = 15 Green Crystals

4 STARS GUNNER SLOT = 25 Green Crystals

5 STARS GUNNER SLOT = 35 Green Crystals

6 STARS GUNNER SLOT = 50 Green Crystals

7 STARS GUNNER SLOT = 75 Green Crystals

TOTALL VALUE OF ONE FULLY UPGRADED SLOTS = 200 Green Crystals

TOTALL VALUE OF BOTH FULLY UPGRADED SLOTS = 400 Green Crystals

In the Gunner Mode You can try to compete with other players at King of Gunner games. More about it You can find here King of Gunners.

So the good thing of Gunner Mode is grinding materials and swords. Bad thing about it is time consuming. More You can find in Farming: Gunner Mode.

Related things

 * Farming: Gunner Mode
 * Gunners
 * Gunners Skills
 * King of Gunners
 * Infinite Spire: Gunner