The system for The Expanse is the AGE system, so I'm hoping someone with another game which uses AGE can answer this. Neither The Expanse core rules nor the Blue Rose RPG have any rules about it!
In all the lists of stunts, the first few have the label (Core) written before their name. For instance the first five of the General Combat Stunts are:
- (Core) Adrenaline Rush
- (Core) Momentum
- (Core) Duck and Weave
- Take Cover
- Guardian Angel
What does Core mean? Does it have a game mechanic effect which applies to using or choosing those particular stunts?