🧱 First Seven

Fortification is 1,150 on Level 1. Level 2 is 1,200, Level 3 is 1,250, and Level 4 is 1,300. Level 5 is 1,350, Level 6 is 1,400, and Level 7 is 1,450.

📈 Eight Through Fifteen

Level 8 is 1,500 and Level 9 is 1,550. Level 10 is 1,600, and Level 11 is 1,650. Level 12 is 1,700. Level 13 is 1,800, Level 14 is 1,900, and Level 15 is 2,000.

🧭 Sixteen Through Twenty

Level 16 is 2,100. Level 17 is 2,200, Level 18 is 2,300, Level 19 is 2,400, and Level 20 is 2,500.

🎯 Closing Rows

Level 21 is 2,600, Level 22 is 2,700, Level 23 is 2,800, and Level 24 is 2,900. Level 25 is 3,000.

After Level 20 shows 2,500, which Fortification number on the Upgrade Preview are you aiming at for the next Fortress upgrade?