Converter
Turns enemies into rats fighting for you. Rats inherit Converter's stats.
- Type
- Tower
- Owner
- King of Progress
- Unlock the king
- Level up 299 plots
How players use it
- Final battle in year 33 Boss damage. Vao reports that a Converter cannot turn a boss into a rat and deals heavy damage to it instead, even unlevelled. Only Vao reports this.
How to get it
- In the King of Progress's 9-card deck: a run as this king can start with it, and losing a battle offers cards from your own deck.
- Loot after beating the King of Progress in battle when that king is one of your enemies.
- Merchant: Jack of Structures (buildings, towers and bases).
- Joker mode: pick it for a custom deck.
Decrees, perks and cards that name it
| Entry | Effect |
|---|---|
| Proliferation King of Progress decree | Converter now summons 1 more Rat per conversion. |
| Mad King of Progress perk | Converters start with extra attack speed. |
Rest of the King of Progress deck
Patch history
- Patch #19
Infertility quest: you now start with two extra Converter cards.
- Patch #21
Converter's minions now properly inherit Converter's base stats again.
- Patch #22
Converter summons now lure enemies like other summons. Here's how it works now: as long as you have troops, all summons will be attacked. But after your troop count goes down to zero, no new summons will stop enemies from rushing to your base.
- Patch #22
Converter (Progress): summons now lure enemies.
- Patch #22
Converter now only lure enemies while you still have troops in all situations, as intended.
- Patch #29
Converter now gains +1 ray per level.
- Patch #30
Converter's tooltip now displays its beam count.
- Patch #30
Updated Converter spawns in "Infertility" quest.
Lines from the official Steam patch notes since Patch #18 that name this card.
Data: 9 Kings 1.0 card table on the official wiki, imported 2026-11-13.