Cost of the 1st level:

400400200 CRP 2
The forge is the development center of the Tosses. Experiments are conducted here that help to devise new weapon systems. The forge boosts the defense construction and discipline development with every level.
Comparison by level
Lvl Acceleration of construction Acceleration of knowledge
1 x1.1 x1.15
2 x1.4 x1.3
3 x1.9 x1.45
4 x2.6 x1.6
5 x3.5 x1.75
6 x4.6 x1.9
7 x5.9 x2.05
8 x7.4 x2.2
9 x9.1 x2.35
10 x11 x2.5