Expansions

Expansion: Strictly speaking, your building site is also a resource in the city – you'll notice quickly that the available space is limited. But you do not need to constantly sell buildings – you can also increase the size of your city. To do this, you must unlock expansions. Investigate technologies for this purpose or conquer provinces on the continent map to give you the expansions. You can find them in your building menu – pay the costs and place them adjacent to your city. Additional expansions are available to you for Diamonds or medals. But expanding or tearing down is not your only option to accommodate more buildings in your city – compare buildings with regards to size and effects. Smaller, more efficient buildings will help to save space!

You can see below a table with all expansion type by age. There is 3 categories of expansion: those you can win in the tech tree and the campaign map, those you can buy with diamonds, and those you can buy with medals. Medals expansions are not related by ages. Currently, there are 26 medal expansions.

	Tech Tree	Campaign	Premium	Total per age
Bronze Age	4	1	2	7
Iron Age	5	2	2	9
Early Middle Age	4	2	2	8
High Middle Age	5	2	2	9
Late Middle Age	5	3	2	10
Colonial Age	3	2	2	7
Industrial Age	2	3	2	7
Progressive Era	2	2	2	6
Modern Era	2	2	2	6
Postmodern Era	2	2	2	6
Contemporary Era	2	2	2	6
Tomorrow Era	2	2	2	6
The Future	2	2	2	6
Arctic Future	3	2	2	7

Expansions cost :

#	Research/Campaign		Diamonds	Medals
1	100	50	200	10
2	300	50	200	50
3	400	50	400	200
4	600	50	400	500
5	800	100	600	1 000
6	1 000	100	600	2 000
7	1 300	100	600	3 000
8	1 800	100	600	4 000
9	2 300	200	600	5 000
10	2 800	200	600	6 000
11	3 400	200	600	9 000
12	3 900	200	600	12 000
13	5 400	300	600	15 000
14	7 100	400	600	18 000
15	8 700	400	600	21 000
16	10 000	400	600	25 000
17	12 000	400	800	30 000
18	14 000	400	800	40 000
19	16 000	500	800	50 000
20	20 000	500	800	65 000
21	24 000	600	800	85 000
22	27 000	600	800	105 000
23	31 000	600	1 000	130 000
24	35 000	600	1 000	160 000
25	39 000	600	1 000	200 000
26	47 000	600	1 000	240 000
27	55 000	600	1 000	-
28	63 000	600	1 000	-
29	72 000	600
30	80 000	600
31	90 000	600
32	100 000	600
33	120 000	600
34	140 000	600
35	160 000	600
36	180 000	600
37	200 000	600
38	230 000	600
39	260 000	600
40	300 000	600
41	340 000	600
42	380 000	600
43	420 000	600
44	470 000	600
45	520 000	600
46	570 000	600
47	620 000	600
48	680 000	800
49	740 000	800
50	800 000	800
51	860 000	800
52	930 000	800
53	1 000 000	800
54	1 070 000	800
55	1 140 000	800
56	1 220 000	800
57	1 300 000	800
58	1 380 000	800
59	1 460 000	800
60	1 550 000	800
61	1 640 000	800
62	1 730 000	800
63	1 820 000	800
64	2 000 000	800
65	2 200 000	800
66	2 400 000	800
67	2 600 000	800
68	2 800 000	1 000
69	3 000 000	1 000
70	3 200 000	1 000
71	3 400 000	1 000
72	3 600 000	1 000