P. P. Hammer and his Pneumatic Weapon is a computer game for the Amiga and for the C64.
The game is a platform game with puzzle elements. It draws obvious influence from the earlier game Lode Runner. In the game, you control a character called P. P. Hammer, who is on a quest to discover and acquire all treasures from a series of more than 60 levels. These levels are divided into four graphical themes: Ancient Rome, Ancient Egypt, Medieval castles, and ice. A fifth theme, LegoLand, appears on bonus levels.
Each level in the game is made up of rectangular blocks, and contains various things including treasures, enemies, locked doors, bonus items and traps. P. P. Hammer carries a jackhammer, which allows him to drill through a block he's standing next to. As in Lode Runner, drilling through more than one layer of blocks requires creating a triangle-shaped cavity more than one block wide, and blocks reappear after a short while. A block reappearing on top of P. P. Hammer kills him.
P. P. Hammer can collect treasures and various power-up potions lying around the level. When he has collected all the treasures, the exit door opens, and going through the exit door completes the level.
The C64 version had an easter egg: sometimes after returning to the main menu, the 1983 hit song "Garden Party" from the band Mezzoforte was played instead of the game's original music. This song was also used as the initial loading tune for the tape version of the game.