ess ▁where ▁by ▁knowing ▁all ▁the ▁cards ▁players ▁must ▁think ▁about ▁strategy ▁and ▁future ▁moves . ▁Open ▁cards ▁variation ▁might ▁take ▁hours ▁to ▁finish . ▁ ▁E as ier ▁- ▁Hard er ▁ ▁To ▁make ▁the ▁game ▁harder ▁or ▁easier , ▁players ▁agree ▁upon ▁a ▁few ▁extra ▁rules ▁before ▁starting ▁play . ▁ ▁E as ier : ▁ 2 s ▁and ▁ 3 s ▁are ▁wild ▁when ▁placed ▁on ▁other ▁draw ▁cards , ▁so ▁a ▁ 2 ▁of ▁clubs ▁may ▁be ▁placed ▁on ▁a ▁three ▁of ▁hearts ▁to ▁pass ▁the ▁penalty ▁to ▁the ▁next ▁player ▁in ▁turn . ▁Hard er : ▁ 2 s ▁and ▁ 3 s ▁are ▁used ▁like ▁normal ▁cards , ▁but ▁still ▁keep ▁their ▁meaning , ▁that ▁is , ▁the ▁player ▁draw s ▁ 3 ▁or ▁ 2 ▁cards . ▁E as ier : ▁C ards ▁regardless ▁of ▁their ▁meaning ▁as ▁the ▁special ▁card ▁may ▁be ▁placed ▁in ▁small ▁pack s ▁at ▁once ▁if ▁all ▁have ▁the ▁same ▁numeric ▁or ▁literal ▁value . ▁If ▁a ▁player ▁holds ▁several ▁que ens , ▁he ▁may ▁place ▁all ▁que ens ▁in ▁one ▁turn , ▁if ▁one ▁of ▁the ▁que ens ▁is ▁of ▁the ▁same ▁suit ▁as ▁the ▁suit ▁on ▁the ▁disc ard ▁stack , ▁thus ▁changing ▁the ▁suit ▁and ▁disc arding ▁more ▁cards ▁at ▁once . ▁If ▁the ▁cards ▁are ▁draw ▁cards ▁their ▁effects ▁stack ▁as ▁well . ▁So , ▁if ▁three ▁ 2 s ▁are ▁placed ▁at ▁once ▁the ▁next ▁player ▁must ▁draw ▁ 6 ▁cards . ▁If ▁this ▁rule ▁applies