| Name | Effect | BP | Requirements | required for |
| Drone Flinger | Drones are 3 times faster than normal fleets. | 65 | Planet experienced; Speed University in realm; can only be built once | Drone Gate |
| Drone Gate | All drones will reach their destination in one day. | 150 | Planet innovative; Drone Flinger in realm; can only be built once | --- |
| Fleet Flinger | Fleets starting from this planet are 25% faster than normal. | 37 | Planet innovative; Speed University in realm | Fleet Gate |
| Fleet Gate | Fleets starting from this planet are 25% faster than normal. | 80 | Planet experienced; Fleet Flinger on planet | --- |
| Powershield | Fleets defending a planet with this improvement will ignore 20% of any hits inflicted on them. | 45 | Planet intelligent; Speed University in realm | Extrashield |
| Extrashield | Fleets defending a planet with this improvement will ignore 20% of any hits inflicted on them. | 100 | Planet experienced; Powershield on planet | --- |
| Virtual Garrison | The first 100 hits of an attacker on this planet's defending fleet will be ignored. | 70 | Planet enduring; Cloak University in realm; Ship Factory on planet | Virtual Defenders |
| Virtual Defenders | The first 250 hits of an attacker on this planet's defending fleet will be ignored. | 110 | Planet experienced; Virtual Garrison on planet; 500 ships present on planet | --- |
| Virtual Sidewing | A fleet starting here can ignore the first 100 hits while attacking another planet's fleet. This is a fleet effect (see help). | 65 | Cloak University in realm | Virtual Fleet |
| Virtual Fleet | A fleet starting here can ignore the first 250 hits while attacking another planet's fleet. This is a fleet effect (see help). | 115 | Planet experienced; Virtual Sidewing on planet; 750 ships present on planet | --- |
| Powerweapon | Fleets starting here get 20% more hits on their opponent than normal while attacking another planet's fleet. This is a fleet effect (see help). | 70 | Planet enthusiastic; Weapon University in realm | Extraweapon |
| Extraweapon | Fleets starting here get 20% more hits on their opponent than normal while attacking another planet's fleet. This is a fleet effect (see help). | 130 | Planet innovative; Powerweapon on planet | --- |
| Home Beacon | Fleets will break away from the fight if they lose 150% of the ships their opponents lose in one battle round. The fleet will get an automatic move order back to the source planet. This is a fleet effect (see help). | 75 | Planet intelligent; Scan University in realm | --- |
| Starroad | Fleets starting from a planet with this improvement and aimed to another own planet will be 25% faster. | 55 | Planet diligent; Speed University in realm | Stargate |
| Stargate | Fleets starting from a planet with this improvement and aimed to another own planet will be 25% faster. | 90 | Planet innovative; Starroad on planet | --- |
| Academy | Planet is able to produce TP on a production level 5 higher than indicated. | 25 | Planet intelligent; Industry University in realm | Science Park |
| Laboratory | Planet produces automatically 5 (Extra-) TP every round. | 37 | Planet innovative; 5 improvements built | Science City |
| Science Park | Planet's produced TP are increased by 50%. | 55 | Planet innovative; Academy on planet | --- |
| Science City | Planet's produced TP are increased by 50%. | 75 | Planet enduring; Laboratory on planet | --- |
| Ship Factory | Planet is able to produce ships on a prod level 3 higher than indicated. | 35 | Planet diligent; Industry University in realm | Virtual Garrison, Ship Yard |
| Ship Plant | Planet produces automatically 5 (Extra-) ships every round. | 40 | Planet enduring | Ship Complex |
| Microrobotics | Planet produces automatically 10 (Extra-) ships every round. Planet's produced ships are increased by 10%. The maximum production level (maxprod) increases by 2. | 200 | Planet innovative; Building Yard in realm; can only be built once | Ship Yard |
| Ship Yard | Planet's produced ships are increased by 50%. | 75 | Planet enthusiastic; Microrobotics in realm; Ship Factory on planet | --- |
| Nanomechanics | Planet produces automatically 15 (Extra-) ships every round. Planet's produced ships are increased by 25%. | 250 | Planet experienced; Building Complex in realm; can only be built once | Ship Complex |
| Ship Complex | Planet's produced ships are increased by 50%. | 105 | Planet enduring; Nanomechanics in realm; Ship Plant on planet | --- |
| Building Factory | Planet is able to build improvements on a prod level 5 higher than indicated. | 40 | Planet experienced; Industry University in realm | Major Breakthrough, Building Yard |
| Building Plant | Planet saves 1 turn(s) when building an improvement (but building will last at least one turn). | 35 | Planet enduring | Building Complex |
| Major Breakthrough | Planet's building points are increased by 20%. | 135 | Planet intelligent, innovative; Building Factory in realm; can only be built once | Building Yard |
| Building Yard | Planet's building points are increased by 50%. | 75 | Planet diligent; Major Breakthrough in realm; Building Factory on planet | Microrobotics |
| Remillian Institute | Planet saves 1 turn(s) when building an improvement (but building will last at least one turn). | 215 | Planet experienced; 10 improvements built; can only be built once | Building Complex |
| Building Complex | Planet's building points are increased by 50%. | 90 | Planet enthusiastic; Remillian Institute in realm; Building Plant on planet | Nanomechanics |
| Artificial Environment | The maximum production level (maxprod) increases by 2. | 65 | Planet enduring; Praetor | --- |
| Sea Dome | The maximum production level (maxprod) increases by 2. | 45 | Planet enthusiastic, innovative | --- |
| Trading Post | Increases prod level temporarily (even exceeding maximum prod), depending from all similar improvements seen on the map. Add 1 point for every similar improvement on green and blue planets and a half point if on red planets. The sum of the alien points cannot exceed the sum of points from your own trading improvements. The rounded square root of this value is the increase of prod on every planet with this improvement. | 40 (+2/already built) | Planet enthusiastic; Chamber of Commerce in realm | --- |
| Honey Mouth | No TP-penalty if breaking the peace. There is no purpose in building more than one. | 55 | Planet experienced; 1 planets liberated; can only be built once | Master Diplomacy |
| Master Diplomacy | When calculating the TP-reward of peace, 40 TP are distributed (instead of 20). Every friendly planet seen on the map counts 5 TP (instead of 3) at most. | 75 | Planet enthusiastic; Honey Mouth in realm; can only be built once | --- |
| Power of Love | If an enemy conquers the planet from the Lord who built this improvement, its prod will decrease to 1. It will increase to the maximum possible prod if reconquered by the builder of this improvement (and yes, it will increase to maximum prod even if it never has reached maximum prod before!). There is no production break during the turn in which the planet is reconquered by its beloved Lord. | 48 | Planet enthusiastic; Cloak University in realm | --- |
| Drone Defense | For every cloak level there is a 10%-chance that a report of the planet for another Lord is suppressed. The chance is at least 10% and at most 90%. | 30 | Planet experienced; Cloak University in realm | --- |
| Propaganda Ministry | Planet becomes enthusiastic. | 75 | Planet not enthusiastic, not intelligent | --- |
| Mind Training | Planet becomes intelligent. | 100 | Planet diligent and not intelligent | --- |
| Archive | Planet becomes experienced. | 50 | Planet not experienced; 2 changes of ownership of the planet | --- |
| Duty Garrison | Planet becomes diligent. Planet loses the attribute innovative except if granted by an improvement. | 50 | Planet not diligent; 3 improvements on planet | --- |
| Artisan Centre | Planet becomes innovative. | 80 | Planet enthusiastic and not innovative | --- |
| Spartanic Education | Planet becomes enduring. | 55 | Planet diligent and not enduring | --- |
| Weapon University | Cost of weapon tech levels decreases if the Weapon University is the most common university in your realm. | 20 (+10/already built) | Planet innovative | Powerweapon |
| Speed University | Cost of speed tech levels decreases if the Speed University is the most common university in your realm. | 20 (+10/already built) | Planet innovative | Drone Flinger, Fleet Flinger, Powershield, Starroad |
| Scan University | Cost of scan tech levels decreases if the Scan University is the most common university in your realm. | 20 (+10/already built) | Planet innovative | Home Beacon |
| Cloak University | Cost of cloak tech levels decreases if the Cloak University is the most common university in your realm. | 20 (+10/already built) | Planet innovative | Virtual Garrison, Virtual Sidewing, Power of Love, Drone Defense |
| Industry University | Cost of industry tech levels decreases if the Industry University is the most common university in your realm. | 20 (+10/already built) | Planet innovative | Academy, Ship Factory, Building Factory |
| Palace | Planet becomes your new homeworld. Your home moves in the instant the improvement is built - the last built improvement of this type counts. | 100 | Planet enthusiastic; must not be built on own home planet | --- |
| Chamber of Commerce | The maximum production level (maxprod) increases by 2. Planet produces automatically 5 (Extra-) ships every round. Planet produces automatically 5 (Extra-) TP every round. Planet becomes diligent. | 200 | 10 improvements built; can only be built once | Trading Post |