Editing XBill (section)

== Gameplay ==
The operating systems are represented by logos shown on the computer screens. The computers the player must defend include [[personal computer|PCs]] running [[Linux]] and [[BSD]], [[SPARCstation]]s with [[Oracle Solaris|Solaris]], [[Silicon Graphics|SGI]] [[IRIX]] workstations, [[Macintosh|Apple Macintosh]], [[PalmPilot]]s, and [[NeXTcube]]s. When Bill installs Wingdows onto a computer, its current operating system is placed beside it.

Using the [[computer mouse|mouse]], the player must squash Bill and drag discarded operating systems back to their computers. At the end of the level, points are accrued for every computer that is still running its original operating system.

On later levels, computers are connected to each other with [[Local area network|LAN]] cables, causing Wingdows to spread faster. Some computers may also catch fire. This can be cured by dragging buckets of [[water]] onto them.