Is it something at least some people know, or must I assume they will misunderstand “roleplay game” as something fishy with sexual connotations?
I mean something like Dungeons and Dragons and other pen and paper games. Wikipedia translates it as “桌上角色扮演遊戲”, but I get the impression nobody understands this or it is being misunderstood.
桌上角色扮演，or in jargon among players: 跑团。
P.S. It seems that other answerers don't know the term 跑团游戏, which amazes me.
Edit:
The etymology of 『跑团』is unknown to me, but I guess it's because "a group of people playing (running) in the virtual world".
A simpler expression for 桌上角色扮演游戏 would probably be: 角色扮演桌游.
I think there is no specific expression “桌上角色扮演游戏”. People more likely to use "桌游” , which means play on the table, most of the time with cards. If you want to emphasis it is a roleplay game, you'd better describe as "角色扮演类桌游”. The “角色扮演类” is it's attribute.
