Mixed / Multiple Settings
I haven't actually run this yet, but someday I want to run a campaign where I'll allow my players to use careers, talents, items, etc from various or multiple settings. Examples where I could see this working include...
A) an alien race (Twilight Imperium) discovers a primitive planet (Realms of Terrinoth), and their different tactics and approaches to weaponry are made manifest by the different talents available in each system, or
B) there's that fun time in the 1800s where we had Cowboys, Samurai, Pirates, and Count Dracula all happening in different parts of the world.
Some restrictions I would probably place on it as a GM would be that I would only allow from official GENESYS settings (community projects are pretty great but I don't want to get into all that yet), but I'll have the materials to share with my players rather than making them track it down. Another thing I'll do is that I'll let my players pick only one additional setting (I.e. they can build characters using anything found in the Corebook and the setting they choose, but nothing from the others settings just to keep things simple to start out).
One issue I foresee is the difference in combat skills, whether a setting puts the light and heavy distinction on ranged or melee. I have two ideas...
A) halve (round up) the ranks in their skill for a weapon that doesn't use a skill in their setting. Example, I have a fantasy archer with 4 ranks in ranged, but when he tries to use a ranged (heavy) or ranged (light) weapon from the future he only has two ranks in either skill (think Hawkeye in Avengers when he holds his pistol out and aims it like a bow). A fantasy fighter from the same time might have ranks in melee (heavy) but none in melee (light), if he uses a melee weapon from a different era he'll have half of his skill ranks. This halving will encourage the players to stick with using weapons from their own setting to preserve the different flavors, but if they're in a pinch or lose their weapons for a time they can still fight their way out. Or...
B) I take every general melee and ranged skill weapon and determine if it is a heavy or light based on whether it's one or two handed.
Any other issues I might run into when mixing settings?
Edit: I just realized I might run into a similar situation with knowledge checks but harder bc specific knowledge are more common in their respective settings 🤔 yea this mix and match is def harder than I thought it would be lol oops