Room · economy

Forge

+25% imp dig speed per tile. It multiplies what your imps already do, so with no imps it does nothing at all.

Build cost: 28; gold per tile
Dig speed: +25%; at level 1
Max level: 5; branch choice at level 5

Level effects

Cost and effect of one tile at each level, before the adjacency bonus
Level	Gold to reach	Dig speed
1	28	+25%
2	39	+71%
3	78	+130%
4	118	+200%
5	157 + branch	+280%

Level 5 branch

Foundry
Forge · level 5 path
+15% extra dig speed
157 gold
Prospector
Forge · level 5 path
+15 bonus gold per seam found
157 gold

Adjacency bonus

+8% per same-type neighbour tile, capped at +40%

+0%
+8%
+16%
+24%
+32%
+40%

Synergy pairs (+10%) Forge + Barracks · Lair + Hatchery · Library + Training Room

Other economy rooms

Build it in a run

Rooms in the guide Play free