Introduction
Planetfall was originally written by Steve Meretzky. It is copyright 1983 (etc) by Infocom, then Activision, then renamed to Mediagenic, then Bobby Kotick bought it and renamed it Activision, then Vivendi bought it and merged it with Blizzard, then Microsoft consumed the lot.
Thus, the Planetfall source code is copyright 2025 by Microsoft. Microsoft has not released this game as open source, but I’m going at it regardless.
The Visible Zorker Project was created by Andrew Plotkin. MIT license; Github repo. Hosted by the Obsessively Complete Infocom Catalog.
Source files
- compone.zil (3216 lines)
- comptwo.zil (3204 lines)
- globals.zil (2772 lines)
- misc.zil (550 lines)
- parser.zil (1260 lines)
- planetfall.zil (36 lines)
- syntax.zil (473 lines)
- verbs.zil (1998 lines)