?I have played many Scifi games like Star wars, Star Frontiers, traveller, 2300AD, Star Trek over my 30 years of gaming so please do not recommend them.
I'm going to tout my favourite game of the moment, EABA v2.01 and in particular the Fires of Heaven setting. Fires of Heaven is a legacy setting from EABA v1.1 but that's not really a barrier for EABA v2 and as always you can just use the original rules. (That might be an impediment to you for the setting--it's a generic rules set with a dedicated setting and rules treatment and some people seem to have a toxic reaction to generic rules.)
As far as I would use the terms, I would say that it fills your desire for medium crunch. The rules are tight and work on some basic fundamental principles that once you wrap your head around them means that you can extrapolate relatively complex situations of all kinds either on the fly or with reference to the "Universal Chart" if you need an absolute number/result. The system itself is (Attr+Skill)d6 and keep the best three against a target number and has an effects-based "power" system that allows you to build gadgets 'n' powers equally.
Making EABA v2 stand out mechanics-wise, for me at least, are the scaling, non-linear combat rounds and some subtle but really quite interesting tid-bits on skill caps by "tech level," and power/gadget balancing ("Gameworld Base" as the game calls it). While the core book is generic, the settings associated with the games are dedicated systems with what sometimes feels like an openness to "make stuff up" rather than refer to canonical rules all the time (this is in part why I went to EABA v2[/í] from GURPS).
Fires of Heaven cool mechanics that spring to mind? Starship design, front and centre. It is awesome on so many levels and nigh-on demands to be hacked into Firefly or Peter F. Hamilton's Confederation or a number of other settings. It's based around the setting premise of scientific plausibility, so if you're wanting to design Spelljamming ships with it you're going to have a little bit more work to do.
As a setting, Fires of Heaven is basically a scifi-oriented space opera set in the "United Worlds," or 14 star systems radiating out from Sol. In some ways it has a similar vibe to 2300AD in terms of the size of the setting and also has exploration front and centre along with the whole core-periphery approach to it. Beyond that there are aliens, psionics, technology... The usual.
All in all, well worth the check. And if Fires of Heaven doesn't work for you, then there is always Aethos.
I have to agree with Tom here. I am a fan of EABA v.1, but v.2 went a bit to far towards the rules heavy end of the spectrum, and while I really wanted to like it I felt that it was just heavier then I wanted in a game. Just my opinion of course. The settings on the other hand look very interesting and I may grab them at some point.I'm not really sure I consider EABA v2.01 to be "rules medium" any longer. I think EABA v1.0 falls into that category...but EABA v2.01 is much fiddlier.
I come to it from GURPS, so that might explain my perspective somewhat (at least from other people's perspective!). With that said, as I've commonly seen FATE mentioned as being "rules medium," and since EABA v2 shares many of the same characteristics--can be a bit odd to start with, has a bit of a learning curve but, once surmounted, everything ties together (reasonably) well--it seems that the category would fit. Of course, I imagine that distances between light, medium, and heavy when it comes to crunch are of sufficient width as to be comparable to the reason for signs when using the Infinite Improbability Drive.I'm not really sure I consider EABA v2.01 to be "rules medium" any longer. I think EABA v1.0 falls into that category...but EABA v2.01 is much fiddlier.
River of Heaven should be out soon. It is based on OpenQuest/D100.Ok, I have played many different games over the years and am looking for something new.
I have seen some games like Stars without Numbers and Imperium Chronicles but know nothing about them. There maybe another SciFi game I have not heard that maybe worth looking at. Anyway if you can give me info on these games or another please do so. Please do not give me a name of a game without a reason that it is worth playing. Tell me what you like and problems you have found in the game.
I have played many Scifi games like Star wars, Star Frontiers, traveller, 2300AD, Star Trek over my 30 years of gaming so please do not recommend them. I am looking for a good ruleset with an interesting setting be it a soft or hard scifi. I prefer a rules medium games where there is some detailed rules but not so many that it slows gameflow and the ability to gm on the fly.