Space or rather SciFi RPGs have imo several problems which does not make them as attractive as fantasy RPGs.
- Scale
Scale is something many SciFi (and even some more modern-ish fantasy RPGs like Eberron) often do not get right.
In a SciFi RPG there would be billions of people on a planet which has further implications which often go against Space Opera tropes. Planetary invasions would be next to impossible and fleets would number in the thousand ships. That makes the individuals rather insignificant but RPGs are all about individuals.
Thus this is often either completely ignored without explanation or the setting focuses on small colonies and not developed planets.
Another "problem" with scale is that with billions of people it will be very hard to explain why there are not thousands, probably tens of thousands of high level characters all doing their thing.
- Connectivity.
In a typical SciFi setting you are usually always connected to the wider world (heck, you are already in the real world). And that opens up a lot of possibilities for the PCs to tackle a problem which the GM might be unprepared for, from stalking the BBEG on social media to hiring an expert for whatever skill they need to telecommunicate with when needed. That becomes especially a concern with the scale of developed SciFi planets which ensures that will find nearly anything.
- Structures
Most SciFi scenarios have a society which is at least as established as modern day western countries or even better. (with some exceptions like WH40K). That means a working and more or less effective police force, laws, emergency services and generally authorities.
And lets face it most PCs would be criminals and players are notorious that when they play they do not want to be shackled by law. Calling authorities? Gun registration? No way, the PCs are heroes and must not be hindred by this or be not allowed to shoot up the BBEG's base in the middle of the city.
And worse, when the PCs buck this trend and involve the authorities it often throws a spanner into the GM's plans. Hey police, the BBEG wants to destroy this city/moon/planet. Here is evidence, do something.
Most of the times all of those things get ignored or worked around by having the game happening around small wild west colonies or unexplored space.
Still, it limits what can comfortably be done with SciFi a lot.
- Scale
Scale is something many SciFi (and even some more modern-ish fantasy RPGs like Eberron) often do not get right.
In a SciFi RPG there would be billions of people on a planet which has further implications which often go against Space Opera tropes. Planetary invasions would be next to impossible and fleets would number in the thousand ships. That makes the individuals rather insignificant but RPGs are all about individuals.
Thus this is often either completely ignored without explanation or the setting focuses on small colonies and not developed planets.
Another "problem" with scale is that with billions of people it will be very hard to explain why there are not thousands, probably tens of thousands of high level characters all doing their thing.
- Connectivity.
In a typical SciFi setting you are usually always connected to the wider world (heck, you are already in the real world). And that opens up a lot of possibilities for the PCs to tackle a problem which the GM might be unprepared for, from stalking the BBEG on social media to hiring an expert for whatever skill they need to telecommunicate with when needed. That becomes especially a concern with the scale of developed SciFi planets which ensures that will find nearly anything.
- Structures
Most SciFi scenarios have a society which is at least as established as modern day western countries or even better. (with some exceptions like WH40K). That means a working and more or less effective police force, laws, emergency services and generally authorities.
And lets face it most PCs would be criminals and players are notorious that when they play they do not want to be shackled by law. Calling authorities? Gun registration? No way, the PCs are heroes and must not be hindred by this or be not allowed to shoot up the BBEG's base in the middle of the city.
And worse, when the PCs buck this trend and involve the authorities it often throws a spanner into the GM's plans. Hey police, the BBEG wants to destroy this city/moon/planet. Here is evidence, do something.
Most of the times all of those things get ignored or worked around by having the game happening around small wild west colonies or unexplored space.
Still, it limits what can comfortably be done with SciFi a lot.