Beef ribs, but I have done moose ribs in a very similar way
Difference with moose ribs is that most game fat is a bit strong flavored.
So I will trim as much external fat off the moose ribs, then simmer them in water with onions, garlic, bay leaves and peppercorns for a couple of hours. This will leech out some more fat.
Pull out the ribs, and rinse them off. Skim all the fat off the simmering water (it's kinda a stock now) but you GOTTA skim off the fat an scum.
Then the ribs get coated in mustard and liberally sprinkled with a dry rub. Lots of dry rub recipes on the intraweb, any will do, find on you like.
Put in smoker or use the BBQ at low heat, with wood chips in a pan. Put heat on one side, ribs not on direct heat.
Put a pan with onions and tomatoes in it, to also smoke.
Ribs should slow smoke for most of the day. Baste with apple cider vinegar form time to time. Or make a "mop" mixture and baste it with that. Take the onions and tomatoes out when they are blackened and smokey.
Make a sauce from the onions, tomatoes, a bit of the simmering stock, some vinegar, some brown sugar and whatever else you like.
I've also just boned out the rib meat and simmered it in saucy stock for hours. It's good too.