Balls of Steel is a pinball simulation game developed by Wildfire Studios and published by GT Interactive in 1999. Designed for Windows 95/98, it features five distinct themed tables: Barbarian, Darkside, Duke Nukem, Firestorm, and Mutation. Each table includes its own missions, video modes, and audio, with the Duke Nukem table adding voice clips from the character. The game supports resolutions up to 800x600 and offers both a scrolling and a top-down view of each table; four difficulty levels adjust ball counts and rule sets. A notable online feature, WorldScores, allows players to submit high scores and compare globally. The physics model prioritizes fun over strict realism, and some tables incorporate arcade-style events not possible on a physical machine. While not an exact simulation, Balls of Steel provides a varied and engaging pinball experience.