Access Floor

Secret Halls is the ninth level (slot nine) of Catacomb 3D (1991). It serves as the main hub world for basically the rest of the game's levels.

Walkthrough
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Gates

 * Gate of Stone
 * The Dungeon
 * Lower Dunegons


 * Gate of Slime
 * Catacomb
 * Lower Reaches


 * Gate of Horror
 * The Warrens
 * Hidden Caverns (secret level)


 * Gate of Tar
 * The Fens of Insanity

Lower Reaches ultimately contains the final exit out of the hub, leading to Chaos Corridors.

Messages

 * Access Floor
 * Gate of Stone
 * Gate of Slime
 * Gate of Tar
 * Gate of Horror

Enemies Present

 * None

Items Present

 * None

Fun Stuff

 * A hub system would return to the series with Catacomb Apocalypse (1993).