Simplify the following text for a Grade 8 native English-speaking person.
Original: It is a cross-platform project that allows the game to be played on BeOS , FreeBSD , Linux , Mac OS X , Solaris , Windows and prossibly others .
Simplified: It is a cross-platform project that allows the game to be played on BeOS , FreeBSD , Linux , Mac OS X , Solaris , and Windows rather than DOS .