Donkey Kong Jr (Junior) on Nes: The 4th level, the locks, the final battle

Just like the first Donkey Kong game, this final level consists of freeing Donkey Kong while making the villainous Mario/Jumpman fall. To do this, Donkey Kong Junior will have to push all the keys into all the locks while watching out for birds and crocs. If you pay attention, the level is quite easy.

Game A

In Game A: 2 birds, 2 crocs, easy going.

Game B

In Game B, it doesn't really go faster but the number of birds doubles (2 crocs, 4 birds).

Game B - 2nd playthrough

The 2nd playthrough in Game B doesn't seem to increase the speed either, but you will have a third red crocodile and still 4 birds.

The end of the game