Buildings

Buildings are your main source of gold in the game with a few that serve other purposes.

The Arena and Fusion Master cannot be sold, the others can for 20% of the purchase price regardless of upgrades. All buildings can be moved around and flipped in two directions, there is no need to sell buildings to rebuild them elsewhere.

Fusion Master
Allows you to fuse and enhance armor.

Cost: Free

Size: 2x1

Upgrades: None

Arena
Allows you to join PvP tournaments once you hit level 10.

Cost: Free

Size: 2x1

Upgrades: None

Armorsmith
Allows you to craft armors, each additional armorsmith allows you to build more armors simultaniously.

Cost: Increases with each additional Armorsmith Size: 2x1
 * 1st : Free
 * 2nd : 5,000
 * 3rd : 25,000 gold
 * 4th : 20 Gems
 * 5th :
 * 6th :

Construction: ? Upgrades:
 * Level 2 : 10,000 gold; 5% less time spent crafting Armor Sets
 * Level 3 : 10 Gems; 10% less time spent crafting Armor Sets

Chance Chest
Allows you to purchase and use keys to open chests for random rewards.

Cost: Free

Size: 1x1

Upgrades: None

Income Buildings
Each building produces gold at different rates, and once their storage is full they will stop generating gold until emptied. You can collect gold by clicking on the bag icon hovering over the building (which appears at about 25% capacity), or click on the building and collect from there. Gold bars will pop out, which you can click again to collect. (This last bit is not necessary, gold bars will start to expire after 10 seconds, but will be added to your balance once gone. It just speeds up collecting.)

Level 2 upgrades increase storage size, while keeping the time to fill up the same, resulting in a higher gold gain per hour. Level 3 upgrades are the same as a level 2 upgrade, with an added 25% storage bonus on top. A level 3 Fountain takes 6m15s to fill up versus 5 minutes on a level 1 or 2.

Guard Tower
Cost: 300 gold

Income: 167 gold/hour

Storage: 2,000 gold

Size: 1x1

Construction: ?

Upgrades:
 * Level 2 :? gold; increase storage to 2,500 gold, income to 210 gold/hour
 * Level 3 : 5 gems; increases storage to 3,300 gold, income to ? gold/hour

Cathedral
Cost: 1,000 gold

Income: 500 gold/hour

Storage: 500 gold

Size: 1x1

Construction: ?

Upgrades:
 * Level 2 : 600 gold/hour
 * Level 3 : 10 gems; increases storage to 800 gold, income to ? gold/hour

Tavern
Cost: 7,500 gold

Income: 475 gold/hour

Storage: 1,900 gold

Size: 1x1

Construction: ?

Upgrades:
 * Level 2 : $500/hr
 * Level 3 : 15 gems; increases storage to 3,000 gold, income to ? gold/hour

Crystal Conservatory
Cost: 15,000 gold

Income: 800 gold/hour

Storage: 400 gold

Size: 1x1

Construction: 2 hours

Upgrades:
 * Level 2 : 3,500 gold; ; increases storage to 450 gold, income to 900 gold/hour
 * Level 3 : 20 gems; increases storage to 600 gold, income to ? gold/hour

Dungeon
Cost: 30,000 gold

Income: 450 gold/hour

Storage: 9,000 gold

Size: 1x1

Construction:  4 hours

Upgrades:
 * Level 2 : 20,000 gold; increases storage to 10,500 gold, income to 510 gold/hour
 * Level 3 : 30 gems; increases storage to 15,000 gold, income to ? gold/hour

Training Field
Cost: 50,000 gold

Income: 1,167 gold/hour

Storage: 14,000 gold

Size: 2x1

Construction: 8 hours

Upgrades: Note: Due to it's double size, gold/hour/square is halved when comparing to other buildings.
 * Level 2 : 25,000 gold; increases storage to 16,500 gold, income to 1,400 gold/hour
 * Level 3 : 35 Gems; increases storage to 24,000 gold, income to 1900 gold/hour

Monster Nest
Cost: 100,000 gold

Income: 750 gold/hour

Storage: 1,500 gold

Size: 1x1

Construction: 12 hours

Upgrades:
 * Level 2 : 15,000 gold; increases storage to 1,900 gold, income to 900 gold/hour
 * Level 3 : 40 Gems; increases storage to 2,500 gold, income to 1400 gold/hour