Two offering slots, One hidden.
Allow two offering slots, one hidden. The always hidden offering slot can allow small, basic changes to the game, such as increasing/decreasing the dark fog, or the effects to change placement of the basement/hatch. Things that are basically inert and functionally useless changes, but might end up being the slight change you needed to prevail. You could maybe add a killer offering that voids out all survivor offering, which would still be hidden.
Comments