Rooms

Rooms are generated at the start of each floor, many factors determine which rooms become what type, but it is largely controlled by random number generation.

Bookshelf
These Rooms contain a Bookshelf, which when interacted with will either increase 1 Attribute randomly, or increase 1 Magic level randomly. Spawns a set of enemies from the current floor's list 75% of the time.

Enemy Room
The most common type of Room in the Dungeon, these contain sets of enemies predetermined by the floor number and other factors. The Dark Lord's Spell will prevent you from leaving an Enemy Room until it has been cleared of Monsters. Every time an Enemy Room is cleared, there is a chance for a Chest to spawn. If one does not spawn, this chance increases by roughly 7.5%.

Treasure Room
Treasure Rooms will always contain a Gear Chest, the quality is determined by the floor number and other factors.

Shrine
Shrines can be interacted with to produce a random effect from the Shrine Effects list. Some of these effects are entirely good, and some come at a cost. Spawns a set of enemies from the current floor's list 75% of the time.

Shop
Shops contain at least 1 key, and possibly other Pickups, as well as Gear or Accessories. All items in a shop must be purchased for Coins, unless the player holds a Stealth Cloak, in which case they can try their luck at stealing from the shop (success is determined by a Dexterity Roll.)

Smith
A Smith Room contains an Anvil, which the player can interact with to improve the Quality of a random piece of Gear. For Weapons each Quality level adds 1 to Hit rolls and Damage. For Chest or Leg Armor each quality level adds 1 to Armor. Spawns a set of enemies from the current floor's list 75% of the time.