| Name | Interval Income | Interval Troop Training | New troops | Development type | Timing | Cost | Notes |
| Troop Speciality | 0 | 0 | 0 | defense | 1 | 1000 | 1/sector - 1/2 cost on troop type. spaceport allows more than 1 |
| Tower | 0 | 10 | 10 | defense | 1 | 250 | 1/1000pt of development |
| Turret | 0 | 0 | 0 | defense | 1 | 500 | 1/1000pt of development - hvy3str4(40k ap4) |
| Gun ports | 0 | 0 | 0 | defense | 1 | 500 | allows full unit to take walls |
| Walls | 0 | 0 | 0 | defense | 1 | 500 | provides bunker defense |
| Trenches/Field Works | 0 | 0 | 0 | defense | 1 | 500 | provides +1 AC, up to 4 |
| Mines | 0 | 0 | 0 | defense | 1 | 500 | 4" hidden mine field |
| Short Range Scanner | 0 | 0 | 0 | defense | 1 | 500 | locates inflitrators |