The Worldbreaker Gun is a 4th era Frost Fortress. It is a versatile and powerful defensive tower that does high damage and renders medium and small units almost useless because of its high damage and knockback. In addition to being a defensive tower, it can be changed into heavy snowball mode, wherein the cannon can fire over a 200 meter range on command, and do copious amounts of damage. While the card is effective in PvE, in PvP it's not as useful, as it is 4th era, and requires large amounts of power and time to construct.
- Every 3 seconds, cannon fires a shell that deals 830 damage to enemies in a 15 radius around its target, up to 1240 in total. Affects ground targets only. Knocks back small and medium units.
- Power: 100
- Activate to fire off a large snowball that deals 1700 damage to enemies in a 25m radius around their target, up to 10350 in total. Has an extremely long range of 200m but can only fire into an area where at least one other friendly ground entity is positioned. Knocks back small and medium units. Has a 30 seconds cool-down after the weapon was built. Reusable every 30 seconds.
- Once switch to this mode, the cannon can no longer use 'Ground Attack'.Cannot switch back to normal mode.
|Worldbreaker Gun II||Frost||Guns of Lyr||Advanced|||
|Worldbreaker Gun III||Frost||Guns of Lyr||Expert|||
|Worldbreaker Gun I||Frost||Nightmare's End||Standard|||
|Card Upgrade||Type or Ability||Effect|
|Worldbreaker Gun I||Damage||+40 damage per target, 70 in total|
|Worldbreaker Gun I||Heavy Snowball*||+100 damage per target, 550 in total|
|Worldbreaker Gun II||Damage||+90 damage per target, 130 in total|
|Worldbreaker Gun II||Heavy Snowball**||+200 damage per target, 1100 in total|
|Worldbreaker Gun III||Damage||+95 damage per target, 145 in total|
|Worldbreaker Gun III||Heavy Snowball***||+200 damage per target, 1300 in total|