The following version numbers are currently used by Settler 3:

• 1.60
  • Version number of the original Editions Settler 3, Settler 3 Mission CD, Settler 3 Amazons and Settler 3 Gold Edition/
• 1.73
  • Version number of the aLobby's unified S3.EXE file which allows all original and GOG versions to play together
  • These version numbers additionally contain some fixes for known bugs of the game
  • new resolution on F1
• 2.1
  • Version number of the Siedler 3 History Edition
• 2.7
  • Version number of the GOG versions of the game

The height of the version number after 1.60 says nothing about the technical state of the version. The version numbers are publisher-dependent.