4月30日凌晨，《皇室战争》官方正式宣布，游戏将于5月3日（下周二）进行一次版更新，其中必然包含了卡牌的平衡性调整，详细内容如下：
中文版：
1、迫击炮：部署时间从3秒延长到5秒，伤害降低10%。
2、炸弹塔：有效时间从60秒减少到40秒。
3、圣水采集器：生命值减少20%。
4、加农炮：生命值降低11%。
5、皇家巨人：攻击范围提升1格。
6、镜像术：复制普通卡牌（白卡）和稀有卡牌（橙卡）的等级提升1级。
7、女武神：被火球术击中时，将会出现被弹开的情况。
8、迷你皮卡：被火球术击中时，将会出现被弹开的情况。
9、所有单位的攻击范围数值修正！
皇冠塔的攻击范围将会缩短
英文版：
Mortar: Deployment time increased to 5sec (from 3sec), damage decreased by 10%
- For a building with both offensive and defensive capabilities, the Mortar is currently too strong and offers too much value for 4 Elixir. Its use rate in Arena 8 is a bit high for such a specialized, and contentious, card. Additionally, we wanted to take into consideration that when the new Tournament Rules come into play, Mortars will be capped at level 9 instead of level 8.
Bomb Tower: Lifetime decreased to 40sec (from 60sec)
- The Bomb Tower is a bit too dominant and difficult to deal with in the low to mid Arenas currently. A lower lifetime will help with this and also bring it more in line with the other defensive buildings.
Elixir Collector: Hitpoints decreased by 20%
- The Elixir Collector's use rate is very high at the top and feels like too much of an obvious choice in many decks. Additionally, being able to use it as a distraction and damage absorber is interesting, but it’s a bit too good at the latter right now. Less hitpoints should remedy this.
Cannon: Hitpoints decreased by 11%
- The Cannon simply offers too much value for 3 Elixir.
Royal Giant: Range increased by 1
- The Royale Giant's low use rate shows that he hasn’t yet found his purpose. A longer range will allow him to outrange most defensive buildings and make him the demolitionist he was born to be!
Mirror: Common and Rare Cards mirrored 1 level higher
- This change will mean a Tournament Rules level Mirror (4), mirrors all card rarities to their respective Tournament Rules levels (1, 4, 7, 9); and a max level Mirror (8), mirrors max level cards. It should also help boost the Mirror’s overall value and appeal.
Valkyrie: Will be affected by pushback (e.g. when hit by Fireball)
- When a rather large Fireball lands on your face you should feel it, and look as though you felt it. The Valkyrie is tough as nails, but she’s not that tough. This change is for consistency with all other small to medium sized troops.
Mini P.E.K.K.A: Will be affected by pushback (e.g. when hit by Fireball)
- Same as above.
Range Values (all units): Fixed
- We fixed a bug where the handling of attack ranges wasn't consistent with different sized units. Due to this the range values will appear to be smaller than before for some units in the next update, but their ranges are all effectively the same as before.
- One example of this is when two units with the same range encountered each other, they didn’t always attack at the same time - this has been fixed.
- Also, the King Tower's range seen here appears to have been decreased, but it hasn't! And likewise with the Royal Giant, we're increasing his range by 1, but his info screen will still show a range of 6 in the next update - even though it has increased!