Worms is the first in a series of artillery games developed by Team17. The game was first developed in Blitz Basic on the Amiga before its commercial release. The game was originally released in 1994 for the Amiga and later ported to other systems. It was followed in 1995 by an expansion pack, Worms Reinforcements, which was amalgamated with the original game to create Worms and Reinforcements United (a.k.a Worms United or Worms Utd.) the same year. Worms: The Director's Cut was released in 1997 featuring improved graphics, an expanded selection of weaponry and a level editor.