Embassy
In many strategy or city-building games, an Embassy building represents a gateway to a political or diplomacy layer of the game, which can sometimes be a source of confusion for new Lordrush players. In Lordrush, the Embassy is actually a military support building which primarily serves to increase the Reinforcement Capacity of your Town. In other words, this number represents the total cap on the number of troops that other players can send to you to protect your Town from outside attacks.
The other feature of the Embassy is that it increases the number of Ally Assists as well as the Ally Help Time per assist that you receive when alliance members attempt to boost your building construction, tech research, etc. The number of potential Ally Assists you may receive increases by one per Embassy level and the Ally Help Time increases by a few seconds.
Given that the Embassy is one of the longest buildings to upgrade (similar in time to the Town Center) and that the building/research time for things you can boost grows exponentially later in the game, you start to receive diminishing returns from upgrading the Embassy at higher levels. This can be somewhat offset by your Alliance investing in Alliance Tech like Cooperative Protocols and Treaties which further increase the Ally Help Time and Ally Assists, respectively.
Either way, this is still a building you will need to prioritize since every Town Center level requires the Embassy to be upgraded as a prerequisite. Additionally, the Command Center (which improves your Rally Capacity and Squads’ Deployment Capacity) also requires the Embassy as a prerequisite.
Given the length of time to upgrade the Embassy, it is common for Lordrush players that have purchased the second building queue to dedicate one of them to the Embassy immediately upon reaching a new Town Center level. Then the other building queue can be used to upgrade the other newly unlocked buildings in parallel.
Embassy upgrade costs (levels 1-30)
| Level | Prerequisites |  Wood |  Bread |  Stone |  Iron | Upgrade Time | Ally Assists | Ally Help Time (seconds/help) | Reinforce Capacity | Power |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Town Center Lv. 8 | 60 | – | – | – | 2s | 1 | 10 | 1,500 | 440 |
| 2 | Town Center Lv. 8 | 90 | – | – | – | 10s | 2 | 13 | 3,500 | 836 |
| 3 | Town Center Lv. 8 | 400 | – | – | – | 1m | 3 | 16 | 5,700 | 1,430 |
| 4 | Town Center Lv. 8 | 900 | – | 180 | – | 2m | 4 | 19 | 8,000 | 2,222 |
| 5 | Town Center Lv. 8 | 3,800 | – | 760 | – | 6m 40s | 5 | 22 | 11,500 | 3,410 |
| 6 | Town Center Lv. 8 | 9,600 | – | 1,900 | 480 | 13m 20s | 6 | 25 | 15,000 | 5,192 |
| 7 | Town Center Lv. 8 | 34,000 | – | 6,900 | 1,700 | 25m | 7 | 28 | 19,000 | 7,766 |
| 8 | Town Center Lv. 8 | 63,000 | – | 12,000 | 3,100 | 45m | 8 | 31 | 24,000 | 10,340 |
| 9 | Town Center Lv. 9 | 130,000 | – | 26,000 | 6,500 | 2h | 9 | 34 | 29,500 | 12,914 |
| 10 | Town Center Lv. 10 | 230,000 | – | 46,000 | 11,000 | 3h 57m 30s | 10 | 37 | 35,500 | 16,654 |
| 11 | Town Center Lv. 11 | 260,000 | 260,000 | 52,000 | 13,000 | 4h 57m | 11 | 40 | 43,500 | 20,394 |
| 12 | Town Center Lv. 12 | 330,000 | 330,000 | 67,000 | 16,000 | 5h 56m | 12 | 43 | 52,000 | 24,134 |
| 13 | Town Center Lv. 13 | 470,000 | 470,000 | 95,000 | 23,000 | 7h 15m 30s | 13 | 46 | 62,000 | 30,448 |
| 14 | Town Center Lv. 14 | 630,000 | 630,000 | 120,000 | 31,000 | 9h 14m | 14 | 49 | 73,500 | 36,762 |
| 15 | Town Center Lv. 15 | 930,000 | 930,000 | 180,000 | 46,000 | 11h 52m 30s | 15 | 52 | 87,500 | 43,076 |
| 16 | Town Center Lv. 16 | 1,100,000 | 1,100,000 | 230,000 | 59,000 | 20h 7m | 16 | 55 | 105,000 | 51,964 |
| 17 | Town Center Lv. 17 | 1,800,000 | 1,800,000 | 370,000 | 93,000 | 1d 0h 8m | 17 | 58 | 120,000 | 60,852 |
| 18 | Town Center Lv. 18 | 2,500,000 | 2,500,000 | 500,000 | 120,000 | 1d 4h 58m | 18 | 61 | 140,000 | 69,740 |
| 19 | Town Center Lv. 19 | 3,100,000 | 3,100,000 | 620,000 | 150,000 | 1d 19h 27m | 19 | 64 | 165,000 | 82,368 |
| 20 | Town Center Lv. 20 | 4,300,000 | 4,300,000 | 860,000 | 210,000 | 2d 6h 19m | 20 | 67 | 195,000 | 94,996 |
| 21 | Town Center Lv. 21 | 5,400,000 | 5,400,000 | 1,000,000 | 270,000 | 2d 22h 36m | 21 | 70 | 225,000 | 107,624 |
| 22 | Town Center Lv. 22 | 7,200,000 | 7,200,000 | 1,400,000 | 360,000 | 4d 9h 55m | 22 | 73 | 260,000 | 126,566 |
| 23 | Town Center Lv. 23 | 8,900,000 | 8,900,000 | 1,700,000 | 440,000 | 6d 4h 17m | 23 | 76 | 305,000 | 145,508 |
| 24 | Town Center Lv. 24 | 12,000,000 | 12,000,000 | 2,400,000 | 600,000 | 8d 15h 36m | 24 | 79 | 350,000 | 164,450 |
| 25 | Town Center Lv. 25 | 16,000,000 | 16,000,000 | 3,200,000 | 810,000 | 12d 2h 38m | 25 | 82 | 400,000 | 183,392 |
| 26 | Town Center Lv. 26 | 21,000,000 | 21,000,000 | 4,200,000 | 1,000,000 | 13d 22h 14m | 26 | 85 | 470,000 | 211,222 |
| 27 | Town Center Lv. 27 | 29,000,000 | 29,000,000 | 5,900,000 | 1,400,000 | 16d 17h 5m | 27 | 88 | 550,000 | 239,052 |
| 28 | Town Center Lv. 28 | 39,000,000 | 39,000,000 | 7,900,000 | 1,900,000 | 19d 5h 15m | 28 | 91 | 630,000 | 266,882 |
| 29 | Town Center Lv. 29 | 49,000,000 | 49,000,000 | 9,800,000 | 2,400,000 | 22d 2h 26m | 29 | 94 | 725,000 | 294,712 |
| 30 | Town Center Lv. 30 | 60,000,000 | 60,000,000 | 12,000,000 | 3,000,000 | 26d 12h 32m | 30 | 97 | 840,000 | 335,170 |
Costs and times shown are for that level only, not running totals.