Stable with the core 5 gaming together since the mid 80's. We have had some periods with no play through the mid 90's with college etc. In 2001, one of our newer guys got us all back in to 3e and I received a call from our old DM and the core asking if I was interested and said I would check it out. Now 10 years later, we have the core 5 along with 3 others with 2 of those 3 coming on board in 2001 and the 3rd coming on in the last 5 years being my brother in law.
I don't know how we do it, but we play 2-3 marathon sessions a year beginning on Thursday nights at 5-8 pm and play straight through the wee hours of Sunday morning with very limited breaks. Lots of laughs and the best of times. We have one guy now stationed in San Diego and he comes in to the State College area for every session. The rest of us are spread from around State College to Pittsburgh and Philadelphia as well. I give kudos to our great DM for all the hard work and running these sessions as it is demanding and he does an amazing job.
Out of that group, 5 of us play via Fantasy grounds about 3 times a month and allow another person to DM so our marathon DM can be a player. These sessions are fun and used for testing our home brewed game complete with SRD, book, etc. Combination of Conan, PF, 3e, and 4e that we have been playing for the last 4 marathon sessions and is finally the game we all enjoy.
In addition, some of the rest of us work a local campaign about once a month with the one guys son and his friend and another local guy. Unfortunately, with 8 people around table for our big sessions, we really have no room for anyone else and don't open it up. Next one MLK weekend in January. Cannot wait and until then, FG and local one will suffice.