by ATT_Turan
Your fellow players are correct. The Haunt only supersedes the base rules when a new rule explicitly does so - in this case, there is no new action given that allows the players to get Otherworld cards in a way other than described in the rulebook. For that to be true, you'd need one of the little text boxes with a big DISCOVER label. The rules designers just typed a different/wrong word.If you compare that page to any Haunt that explicitly provides players with a new action, you'll see this doesn't do so.
You need to resolve that game according to the standard rules, just like you would if you chose to move your character and discover a new room tile to resolve the Hide and Seek game.