Priced at $9.99, the Police Quest pack contains the original four games in Sierra's police procedural adventure games-- Police Quest: In Pursuit of the Death Angel, Police Quest 2: The Vengeance, Police Quest 3: The Kindred, and Police Quest: Open Season. Will you die because you cuffed a suspect incorrectly? It's certainly possible!
The $5.99 Zork Anthology packs Zork I, Zork II, Zork III, Beyond Zork, Zork Zero and, just because, Planetfall, which is not a Zork title. That's a whole lot of text adventures.
As is standard GOG operating procedure, the games come DRM-free.