the game: Caveman 3.0 FPSRPG / person sim hybrid, open world sandbox survival simulation. stone age setting. emphasis on realism. (would paleo-world sim suffice?).
while adding features to the game, i've tried to follow the rule that the player should be able to do anything that NPCs can do.
the game has periodic random thief encounters, similar to the spawn point triggered thief encounters in skyrim - "gimme all your stuff - or else!". should the player be able to say "gimme all your stuff or else!" to NPCs? IE rob them? the reply would depend on the strength of the player's and NPC's parties. anything from laughing in your face to "here - take everything - just please don't kill me!", followed by a transfer of items. unlike skyrim, a thief will only try to rob you if relative party strength is not against them. so one stupid guy on the road doesn't try to shake down you, your 3 followers, your warhorse, and your wardog. gangs of thieves are planned for Caveman.
the game also includes raiding by hostile bands, and the ability to form alliances with friendly bands for mutual aid in raiding hostiles. i was thinking about having bands with different goals, like survival, conquest, etc. part of that was to include "kings" who would go around with many warriors demanding tribute from other bands (IE a means of taxation). so "let the player demand tribute" got on the todo list, and wasn't removed when goals for bands didn't make the final cut (not really realistic). should the player's party be able to demand tribute from another band? this would work basically the same as the thief encounter, but it would be a "talk to band at shelter" dialog option, not a "talk to caveman" dialog option. relative party strength would determine the response. the number of items transferred would be larger: something like all of the band's trade inventory.