Overview#
The Harry Potter Underground Chambers Map is an immersive adventure map created by the renowned map-maker McTsts (EnderPig). Originally developed as a segment of the massive, now-abandoned Harry Potter in Minecraft project, this standalone experience focuses exclusively on the climax of the first book/film. Players take on the role of Harry Potter, Ron Weasley, and Hermione Granger as they descend through the trapdoor in the third-floor corridor to prevent the theft of the Philosopher's Stone.
The map is celebrated for its complex redstone logic, custom-modeled entities, and faithful recreation of the seven distinct defensive chambers designed by the Hogwarts professors. It is designed for Minecraft and utilizes adventure mode mechanics to ensure a scripted, narrative-driven experience.
The Seven Chambers (The Trials)#
The map is structured as a linear progression through seven unique rooms, each presenting a different gameplay mechanic ranging from stealth and combat to logic and flight.
1. Fluffy's Chamber (Hagrid's Trial)
The entrance is guarded by Fluffy, a massive three-headed dog. Players must interact with a musical instrument (a harp or flute) to put the beast to sleep. Failure to maintain the music or approaching while the dog is awake results in an immediate reset or death.
2. Devil's Snare (Professor Sprout's Trial)
After dropping through the trapdoor, players land in a pit of Devil's Snare. In this Minecraft adaptation, the plant is represented by custom vine-like blocks that slow and damage the player. Players must use light sources or fire-based spells/items to clear a path and escape the entanglement.
3. Winged Keys (Professor Flitwick's Trial)
This chamber features a high ceiling filled with hundreds of glittering, flying keys. Players must locate and mount a Broomstick to pursue the correct silver key. The mechanic involves high-speed flight and precision clicking to "catch" the key required to unlock the heavy wooden door at the far end.
4. Wizard's Chess (Professor McGonagall's Trial)
Players enter a massive chessboard where they must take the place of a chess piece. This is a tactical puzzle where players move across the board following the rules of Wizard's Chess. Moving into an illegal square or being "taken" by an opposing piece triggers a combat encounter with custom-armored statues.
5. The Mountain Troll (Professor Quirrell's Trial)
This room contains a large, hostile Mountain Troll. Unlike the other rooms, this is primarily a stealth or boss-fight encounter. Players must either sneak past the troll using the environment for cover or use environmental hazards to knock the troll unconscious.
6. The Potion Riddle (Professor Snape's Trial)
Upon entering, the exits are blocked by purple and black magical flames. Players are presented with seven unlabelled potion bottles and a logic riddle.
| Potion Type | Effect in Map |
|---|---|
| Nettle Wine | No effect; used as a distractor. |
| Poison | Instant death upon consumption. |
| Forward Potion | Grants Fire Resistance to pass the black flames. |
| Backward Potion | Allows the player to return through the purple flames. |
7. The Mirror of Erised (Dumbledore's Trial)
The final chamber contains the Mirror of Erised. To obtain the Philosopher's Stone, the player must interact with the mirror while having an empty inventory slot, simulating the requirement of "wanting to find the stone, but not use it."
Mobs & Entities#
The map utilizes custom entities and modified vanilla mobs to represent the magical creatures of the Wizarding World.
| Mob | Behavior | Stats/Properties |
|---|---|---|
| Fluffy | Stationary Boss | High health; invincible unless lulled by music. |
| Winged Keys | Flying Entity | High speed; small hitbox; non-hostile but difficult to catch. |
| Chess Pieces | Guard Mob | High knockback; high armor; moves in set patterns. |
| Mountain Troll | Heavy Boss | Slow movement; massive melee damage; high health. |
| The 'Snape' (Quirrell) | Final NPC | Scripted entity that triggers the final dialogue and Mirror event. |
Items & Equipment#
Items in this map are primarily quest-related and cannot be crafted, only found within specific chambers.
- The Philosopher's Stone: The final objective. It is a custom item that, when held, provides the player with Regeneration and Resistance effects.
- Broomstick: A custom vehicle entity used in the Winged Keys chamber. It allows for 3D flight controlled by the player's look direction.
- Harp/Flute: Interactive items used to pacify Fluffy. They function via redstone triggers when used within the proximity of the beast.
- Logic Potions: A set of seven custom potions. Only one provides the specific "Fire Resistance" needed to progress to the final room.
- Silver Key: A unique drop from the Winged Keys trial used to unlock the door to the Chessboard Chamber.
Mechanics & Redstone#
The map is a technical marvel of Vanilla Redstone.
- Logic Gates: The Potion Riddle uses a complex series of AND/OR gates to determine if the player has selected the correct bottle based on the riddle's logic.
- Custom Models: The map uses a built-in resource pack to transform vanilla items (like carrots on sticks) into wands and brooms, and mobs (like Ravagers or Iron Golems) into Fluffy and the Troll.
- Adventure Mode Constraints: Players are locked in Adventure Mode (
/gamemode adventure) to prevent breaking the redstone circuitry or bypassing puzzles. - Checkpoint System: The map features a "Room Reset" mechanic. If a player fails a puzzle (e.g., getting caught by a chess piece), they are teleported back to the start of that specific chamber rather than the beginning of the map.
