Salamu aleikum, 

somedays I meet with my friends and we play games together. There are a few roleplay games (Mafia and Secret Hitler (it is a legal and appropriate game), these are like the game Among Us). 

So in these games every person gets a role and must act like it. There are always two sides (the bad ones and the good ones). Obviously both want to win, so the bad ones need to win in secret, because if the good ones catch them they lose. 

Sometimes these roles have to lie. This doesnt affect anything out of the game. Its only for the game, for the round and the round will be forgotten by everyone and at the end everyone will reveal his true identity. 

If there is lying in the game, its only for the roleplay for this round and doesnt affect any person and so on. 

So can i play this game, included with this roleplay? 

May Allah swt. bless you and Salamu aleikum. 
Abbas