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'''Shareware''' is a software marketing concept where an incomplete or time-limited version of a program is released to entice people into buying the full (registered) version. [[Doom]] and [[Heretic]] were both have initially released as shareware versions, each containing only the first respective nine-level [[:Category:Episodes|episode]] of their respective games (in the unregistered version: [[Knee-Deep in the Dead|Doom: Knee-Deep in the Dead]] and [[City of the Damned|Heretic: City of the Damned]]), making nine [[level]]s each.

Part of the reason [[Doom II]] was not given a shareware release, according to [[John Carmack]], was that "A [a] lot of people consider themselves to have "finished DOOM" when they just finished the shareware episode."<ref>Doomworld.com (1999), [http://www.doomworld.com/interviews/int7.shtmlInterview with John Carmack], (question 15). Retrieved on April 11, 2008.</ref> == Notes == <references /> == External links ==* [ftp://ftp.idsoftware.com/idstuff/doom/doom19s.zip Doom: Knee-Deep in the Dead] v1.9 (and [ftp://ftp.idsoftware.com/idstuff/doom/doom19s.txt text file]), at the id Software FTP site.* [ftp://ftp.idsoftware.com/idstuff/heretic/htic_v12.zip Heretic: City of the Damned] v1.2 (and [ftp://ftp.idsoftware.com/idstuff/heretic/htic_v12.txt text file]), at the id Software FTP site.* [[Wikipedia:shareware|Shareware]]Wikipedia article