Make a small 7 hex map. The center hex is your home planet. I am basing this off of SFB-CTA rules for campaigns for my idea. Make a bunch of 7 hex maps to add areas to your home map. In each of these small 7 hex add maps represent a solar system you can explore and add to your empire. Some of the maps are empty space, some are solar systems with planets, some are resource systems (asteroids, moons and so on), and some are dangerous move areas (nebula's, etc). You start with your home system and add areas to it by playing the campaign game scenarios. As you earn victory points in the battles you repair your ships from the battle and add their points back into your empires fleet point pool. Use the campaign system to generate the battles as listed with the roll charts for fleet size, exp, and so on. Just add your own starship into the fleet and keep track of it's experience (xp dice) and improvements. The Prestige points are used to add systems to your empire, every 2 points allows you to a a 7 hex map system onto your empire. Your fleet victory point pool is increased as you win battles and the reinforcement/repairs will deduct points from the ships use in each fight. Each turn your home system adds 100victory points to your pool. Each other system will add in a random amount to your pool to reflect your colony's resource generation. You can only have as many systems as your prestige total is currently. So an empires prestige of 12 for example would allow 6 extra systems to be added to your empire. If you drop to 10 you lose the last system added. Add the systems in a clockwise fashion around your home system to generate a random universe. Each player would have their own map system independent of the other players maps. You would elect to attack the other players by sending a fleet of whatever points you decide to commit to attack one of the outlying systems and try to work into his home base. You have to spend half the amount of fleet points as you commit to the attack as a cost of declaring war on another empire.
Example: your Klingon empire declares war on the Federation empire and sends 1000 fleet points to attack a Federation system, it would also cost 500 additional points for declaration of war and to simulate the supply resources needed to attack. The Klingon then places a fleet marker worth 1000 points on an outlying system and proceeds to work towards Federation Home system. The Klingon would be fighting any fleets it meets as it travels through the systems. Repairs to attacking fleets is still deducted from the Klingon players fleet pool as normal. Lost ships reduce the size of the attacking fleet permanently. Any systems passed through stop generating resources and battles would affect the players prestige points and the size of their empire. To reinforce an attacking fleet you would add another fleet marker worth "x" points on the initial start point and move the fleet marker until it caught up with the original invading fleet. You still have to pay the half penalty for each invading fleet point, so a reinforcement of 500 fleet points costs your pool 750.
Each turn roll to add a system to your empire based on your prestige point totals. Then conduct possible battles due to invasion or you can roll on the campaign scenario table for a mission to generate prestige points and fleet victory points. The fleets in your systems would be used as the battle forces to fight the missions. Just draw points out of the individual fleets to supply the mission forces.
To add a system when you reach multiples of 2 prestige points, randomly roll a new system. You have to do the "Explore a strange new world" mission successfully to add a population or resource system to the empire. Use the campaign force generation roll charts to determine the size of the mission forces. If you win the scenario you add the new randomly rolled system, any victory points to your fleet pool and any prestige points to your empire. Hazardous and empty space 7 hex areas do not count towards your prestige point system totals.
New system Roll: 1d6
1) System with population that generates fleet points each turn
roll 1d6= 1)100vp 2)80vp 3)60vp 4)50vp 5)30vp 6)10vp
2) System with resources that generates fleet points each turn
roll 1d6= 1)50vp 2)40vp 3)30vp 4)20vp 5)10vp 6)5vp
3)System with a hazard (go to the rule book pg. 22 and generate a system using the charts)
4-6)Empty system (7 hexes of nothing just empty space)
Each turn you can move any fleet counter 1 system that is in contact with the system it's in. The fleet counters have points assigned to them as you see fit. Start with a minimum of 300 points and go up from there. These fleets cannot be more than your fleet victory point pool when added up. Example: if you have 4000 points in your fleet victory point pool you could have 4x 1000 fleet counters in your empire. You can replace losses to fleet counters by sending a smaller fleet of points to reinforce it from your home system. The fleets lose point value as they suffer destroyed ships only, otherwise just deduct repair costs from the fleet victory point pool. Each turn your empire generates victory points from your colony's and home system and repairs are paid from that. So assigning fleet victory points to a fleet ties up those points from being used as replacement/repairs.
You can build a mobile base or battle station in a system. All you do is send a convoy from your home system to the system where you want the base/station to be built. The mobile base costs 120 points to build and the battle station is 375 points to build. These costs come out of your fleet victory point pool. Each civilian ship carries points equal to its purchase value as cargo. Example: a heavy freighter is 30 points to buy and carries 30 victory points in it. So attacking a convoy is a nice way to destroy the enemy's fleet victory points. A 300 point convoy could have 5x heavy freighters to deliver 150points to a fleet to expand it. The convoy reaches the system, the carried points are used to build the MB or BS and then the civilian ships points go back into the fleet victory point pool. So a separate fleet of warships could escort the convoy to protect the civilian ships from attack. If a battle takes place just have the convoy exit the opposite edge of the map as an enemy tries to attack/destroy it before it gets away. A mobile base in a system stops all enemy ships in that system from moving out of it. A battle station affects the systems in contact with the system it's in by exerting a zone of control and prevents movement out of it's system and surrounding systems. So you can protect your empire from invaders by building MB or BS.
To generate a random enemy use the following chart if you wish.
En Player Side
DR Federation
1 vs Klingon
2 vs Romulan
3 vs Kzinti
4 vs Gorn
5 vs Tholian
6 vs Orion
En Player Side
DR Klingon
1 vs Federation
2 vs Romulan
3 vs Kzinti
4 vs Gorn
5 vs Tholian
6 vs Orion
En Player Side
DR Romulan
1 vs Federation
2 vs Klingon
3 vs Kzinti
4 vs Gorn
5 vs Tholian
6 vs Orion
En Player Side
DR Kzinti
1 vs Federation
2 vs Klingon
3 vs Romulan
4 vs Gorn
5 vs Tholian
6 vs Orion
En Player Side
DR Gorn
1 vs Federation
2 vs Klingon
3 vs Romulan
4 vs Kzinti
5 vs Tholian
6 vs Orion
En Player Side
DR Tholian
1 vs Federation
2 vs Klingon
3 vs Romulan
4 vs Kzinti
5 vs Gorn
6 vs Orion
En Player Side
DR Orion
1 vs Federation
2 vs Klingon
3 vs Romulan
4 vs Kzinti
5 vs Gorn
6 vs Tholian
This chart will generate a random opponent so you can fight anyone (except your own side, you may if you like of course)
Each player can choose a race for their empire. You could have 2 Federation empires competing as an example. Just have the other players play the enemy side for your fights and you return the favor during their turns. Build your empire up to a prestige limit that you preset. The home worlds can never be attacked or conquered. Once a player has less than 2 prestige points they can only have a home system and basically have to restart their empire again. If an opposing player invades and causes the defending players empire to collapse to only a home system the war is over and peace is declared. The defending player can rebuild his fleet pool 100 points a turn plus whatever missions they conduct and win. As time goes by that player will have a big enough force pool to start expanding again and adding systems to their empire.
Please give some feedback with ideas you have to make this work better. I tried to keep it as simple and playable as possible without a lot of paperwork. Just start an empire, purchase your favorite ship to be added to your battles/missions, keep track of it's experience and grow your fleet/empire. I used the campaign rules in SFB-CTA as a basis for this larger campaign game.