Specifically as a mark of ownership (so I guess this would fall under BDSM, or more specifically D/s).
I’m not looking for NTR, but I’m fine with darker games; so Fox Girls Never Play Dirty, where the antagonist forcibly gives nipple piercings to girls he steals from the MC would be out, but a game where the MC is a slave owner and brands his slaves would be fine.
Only game with a focus like this I know is Greener Pastures, where the MC has a happy harem, the members of which asked to be collared to show their devotion to him.
I’m not looking for NTR, but I’m fine with darker games; so Fox Girls Never Play Dirty, where the antagonist forcibly gives nipple piercings to girls he steals from the MC would be out, but a game where the MC is a slave owner and brands his slaves would be fine.
Only game with a focus like this I know is Greener Pastures, where the MC has a happy harem, the members of which asked to be collared to show their devotion to him.