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Catacomb 3-D (also known as Catacomb 3-D: A New Dimension, later known as Catacomb 3-D: The Descent and Catacombs 3) is a high-fantasy first-person shooter developed by id Software and published by Softdisk Publishing in the November 1991 issue of the disk magazine Gamer's Edge, with a separate retail release in 1992.
The third game in the Catacomb (Franchise) series of high-fantasy action games from id co-founder John Carmack (Person), Catacomb 3-D brings the series into a first-person perspective. Much of the gameplay remains the same as its predecessors, with players searching for the exit portal while casting fireballs and collecting keys and other items.
Players resume control of Petton Everhail (Character) (sometimes misnamed Pelton), the Grand High Wizard of Thoria (sometimes misnamed Theria), as he ventures into the Keep of the lich Grelminar to destroy his dark legions and rescue Nemesis, Walker of the Spectral Paths. Later releases switches the names of Grelminar and Nemesis, with the lich returning in some of Softdisk's later games.
The game was one of few that id developed for Softdisk due to contractual obligations from the fact that they, comprised of former Softdisk employees, used Softdisk's resources to develop Commander Keen in Invasion of the Vorticons. It is notable for being a precursor to their breakthrough first-person shooter Wolfenstein 3-D, building on the raytracing engine previously used for Hovertank (Game) with texture-mapped walls. Its source code was later released under the GNU GPLv2 license, and can be found here.
The game later received a sequel trilogy from Softdisk's in-house staff. Known as the Catacomb 3-D Adventures, this trilogy builds on Catacomb 3-D with an assortment of new levels and enemies, as well as new graphical effects and a new user interface. The first game in that trilogy, The Catacomb Abyss (Game), is the series' sole shareware title. The game was also included in the 2013 modern compilation Catacombs Pack by Catacomb Games.
In Catacomb 3-D, players guide Petton through Grelminar's Keep to rescue the entombed Nemesis. Each level, other than the final one, has Petton searching for an exit portal while defeating enemies and opening doors using different-colored keys he collects.
Petton's main form of combat is casting fireballs from his hand, which can be used to both damage enemies and destroy secret walls. While players can rapid-fire the Fire button to rapidly cast fireballs, the button can also be held down for a short time to cast a larger fireball that deals triple damage. In addition, Petton has two special limited-use spells at his disposal:
Petton has only a limited number of Bolts and Nukes, which can only be found with pick-up items. In addition, Petton can find limited-use healing potions, which allow him to fully restore his health (either "H" or Space on the keyboard). Other pick-up items include treasure chests (which give bonus points, 100 pts. × current level) and scrolls (which give hints and other lore).
As it uses a similar control panel to Commander Keen in Goodbye Galaxy!, the game includes a bonus mini-game (the Pong (Game) clone Skull 'n' Bones, with the ball being a skull and the paddles resembling a bone).
Along the way, Petton will encounter numerous enemies to defend himself against. The game includes three difficulties (Easy, Normal, and Hard), with harder difficulties adding more enemies per level.
In addition, Petton will encounter fireballs that bounce between walls. These fireballs cannot be destroyed and deal a significant amount of damage on contact, over double the amount of normal enemy attacks.
The game includes 20 total levels, much of which can be skipped, due to secret exit portals, or played in any order, due to the game's hub level. It is possible to complete the game by playing through eight levels.
Later releases change the names Grelminar's Keep and Grelminar's Lair to Nemesis's Keep and Nemesis's Lair.
The game starts with a linear set of seven starting levels:
Completing level 7 leads the player directly to the game's hub level. Level 8 is reserved for the game's first secret level (8. Secret Halls), which is reached through a secret exit in level 3 and leads the player directly to the hub level (skipping levels 4-7). Optionally, players can skip levels 2-8 entirely through a secret exit in the first level.
The game then proceeds to the hub level (9. Access Floor), which include four exit gates leading to one or more levels:
All four of these gates normally lead back to the hub level, and players can visit them in any order, and re-visit levels at any time (allowing for high score manipulation).
The objective of these levels is to use hints from scrolls to find a way to reach a certain secret exit leading to level 17. Knowing this beforehand allows players to skip a majority of these levels.
The game then proceeds to a linear set of four levels, two of which only have Mages as enemies and two of which only have Demons as enemies:
Level 19 includes various booby-trapped portals that lead the player back to level 9. One of the scrolls hints to the correct portal that leads to level 20.