I relate to this lol. I have a fairly large collection of misc board and/or card games. And I love sharing and playing them with friends and family.

Probably our most complicated game would be "Nemesis". It's a space alien game where you and your team have to figure out what's wrong with the ship and why a crewmate died (aka "aliens").

Depending on the number of players it can take a long time. Around 4 hours long on a good run. But if your group has never played it can take 10+ hours due to the shear complexity and getting used to the turn order and stuff you can do.