Pinball, originally known as Full Tilt! Pinball with three tables including the popular Space Cadet, was bundled in Microsoft Plus! 95 and remained part of Windows through XP [1].
Windows XP was the last version to include Pinball. It was removed starting with Windows Vista due to what Microsoft initially explained as a collision detection bug in the 64-bit build that caused the ball to pass through objects, rendering the game unplayable [1].
However, a 2021 community analysis examining 64-bit Pinball versions on the IA-64 and AMD64 architectures found these versions mostly playable with only minor glitches. The researchers speculated that incompatibilities with Windows Vista's UI design likely contributed more to the game’s removal than the collision bug [1].
Raymond Chen, a longtime Microsoft engineer and author, clarified that the severe collision detection bug was actually specific to the 64-bit Alpha AXP version of Pinball. This Alpha AXP version was never widely released since Compaq ended Windows NT Alpha support before completing the 64-bit port [1]. Chen said, "It was the 64-bit Alpha AXP version of Pinball that had the extremely bad collision detection bug" [1].
In 2023, a leaked 64-bit Alpha AXP Windows NT build containing Pinball surfaced. Attempts to run the game resulted in immediate crashes, preventing verification of the bug firsthand [1].
Originally, the Full Tilt! Pinball package included three tables, a figure often cited in retrospectives on the game [1]. The Space Cadet table became particularly well-known as the default Pinball experience shipped in Windows.
The next significant update or investigation related to this topic has not been scheduled, with the latest development being the 2023 leak of the Alpha AXP NT build. The inability to run and test this build leaves some uncertainties about the bug’s exact behavior in that environment [1].
