25m is the very first stage in the game Donkey Kong. 25m is the start of the game, where DK kidnaps Pauline and stomps on the construction site. The result is a basic stage, where Barrels roll down the downwards slopes and Jumpman must work his way to the top. This stage also introduces Hammers and Trouble Bugs. Beating this stage gets to 50m in the original arcade and 75m in the NES version.