The Thor Trilogy

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The Thor Trilogy

Developer(s)	Scenario Software
Publisher(s)	Apogee Software
Designer(s)	Todd Replogle
Platform(s)	DOS
Release date	1989
Genre(s)	Maze
Mode(s)	Single player
Media	Floppy disk
Input methods	Keyboard

The Thor Trilogy (also known as Caves of Thor) is a maze video game published in 1989 by Apogee Software (now 3D Realms). It was developed by Todd Replogle under the Scenario Software name.

The game places the player trapped within the Caves of Thor. The object of the game is to locate three missing items scattered throughout the place. The missing items are the Female-item, the Heart-item and the Male-item. The game's interface, gameplay and graphics are similar to a previous Apogee game, Kingdom of Kroz, and to the game ZZT.

The game was originally distributed as shareware. It consists of three volumes, with only the first volume distributed as shareware, and the rest available commercially. The volumes are:

Volume I: Caves of Thor
Volume II: Realm of Thor
Volume III: Thor's Revenge

The source code of the game used to be available for U$195.00 (in 1990) directly from Todd Replogle. The game was discontinued, and it was later re-released as freeware by Apogee in December 2005. See also list of commercial games released as freeware.

The game includes PC speaker renditions of various classical music pieces, including Flight of the Bumblebee by Rimsky-Korsakov, two preludes from the Well-Tempered Clavier by J.S. Bach, and Solfeggietto by C.P.E. Bach.