This mostly serves as a way to document the many revisions ZZT came on.

(Source: aXiomaticGaming)

(Source: Sergey Galyonkin)

(Source: Zack Hiwiller - final copy)

(Source: Dr. Dos)

(Source: Clecky)

(Source: Imgur)

(Source: 4chan /vr/)

(Source: DOSgamesCOM)