Stage 1-4 is the fourth level of the Big-City and the fourth original level overall in Donkey Kong for the Game Boy. It is also the first original level of the game in which (the original) Donkey Kong is encountered, and because of that, it doesn't have any of Pauline's lost items.
The level contains mostly platforms and Ladders. There are no enemies except Donkey Kong, who will cause Mario to lose a life if touched. To reach Pauline, Mario must climb up to her while avoiding the debris that falls every time Donkey Kong stomps. If he gets hit by any of them, Mario is stunned for a short while. Mario starts at the lowest platform to the right where he must go to the left where there are ladders. He must climb up both of them then go to the right and climb down another ladder leading to some unconnected platforms which he must jump on to make it across to another platform. Then he must climb a long ladder then go down a ladder then climb up a ladder to Pauline to end the level with Donkey Kong taking her away.
Cutscene after level completion
Donkey Kong runs across a bridge above some Spikes to the other side with Pauline. He then puts Pauline down, smiles, then jumps up and pounds down so the bridge breaks right before Mario is able to get there in time. As Donkey Kong laughs and picks up Pauline again, Mario activates the Road block then places it right between the two platforms to create a new bridge and continues to chase after Donkey Kong. This cutscene introduces Roads and how to use them. The player is then given lives based on their score.