When using splash spells (Fireball, Arrows), don't hit the King's Tower, as doing so will activate the king before destroying a tower, giving the defender a significant advantage.
It is possible, though usually impractical, to use high damage spells such as the Rocket or Lightning to directly destroy the King's tower.
When using the Miner or the Goblin Barrel to eliminate a building, the Goblins or the Miner might activate the King's Tower if they are placed too close to it.
In the May 2016 Update, the King Tower's range was reduced to 7 (from 8) but its effective range was unchanged.
On 30/11/16, Supercell released special offers for iOS only, known as the (HERO PACK)RED and (POUCH OF GEMS)RED. Players who purchased either of these offers would gain red decorations around their King's Tower until 6/12/16.
Many spells seem to appear from the King's Tower, despite no clear place they could launch from.
The King's Tower and the Arena Towers are collectively referred to as "Crown Towers".
A 3 Crown draw can be attained when both King's Towers are destroyed at the same time.
Oddly, the King Tower's cannon does less damage than the Arena Towers' bows for all levels except level 1.
Although Cannons themselves can only target ground, the King Tower's cannon can target both air and ground. This might be because the cannon is elevated on the tower.
The level 13 King's Tower has less hitpoints than a level 8 Golem.
If two buildings are placed in front of the King's Tower, a building-targeting troop such as a Golem will target the King's Tower after destroying these two buildings. This puts the opponent at a disadvantage as the death damage of a Golem(ite) or a hit landed by a Hog Rider can activate the King's Cannon, once again giving a significant advantage.
A Tornado could also drag the troop to the King's Tower after it has destroyed the first building.
According to a Clash Royale FAQ, it is said that the King uses Elixir based beard oil with pine scent to keep his perfect facial hair.
Even though the king stands behind the turret, he doesn't seem to be controlling it.