The original Windows Entertainment Pack (WEP) is a collection of 16-bit casual computer games for Windows. These games were somewhat unusual for the time, in that they would not run under MS-DOS. Many of the games were later released in the Best of Microsoft Entertainment Pack. There were four Entertainment Packs in the original series. All games being 16-bit run on modern 32-bit versions of Windows but not on 64-bit Windows.

Microsoft Entertainment Pack 1
Cruel
Golf (a card game)
Minesweeper
Pegged
Taipei (later known as Mahjong Titans and Microsoft Mahjong)
Tetris (Windows version)
TicTactics
IdleWild (a screensaver program), written by Brad Christian

Microsoft Entertainment Pack 2
FreeCell
Jigsawed
Pipe Dream
Rattler Race
Rodent's Revenge
Stones
Tut's Tomb
IdleWild (a screensaver program) - 8 new screen savers for this pack

Microsoft Entertainment Pack 3
Fuji Golf
Klotski
Life Genesis
SkiFree,
Tetravex
TriPeaks 
WordZap
IdleWild (a screensaver program) - 8 new screen savers for this pack

Microsoft Entertainment Pack 4
Chess (later known as Chess Titans)
Chip's Challenge
Dr. Black Jack
Go Figure!
JezzBall
Maxwell's Maniac
Tic Tac Drop