Vaultside Ultimate City

Quickstart

1. Install the add-on and create or load a world with it applied.
2. Open your inventory and search for Vaultside Mega City Generator Block under the Construction tab — or craft one at a crafting table (see recipe below).
3. Place the block anywhere in your world. The build sequence starts immediately — you'll see a message in chat: "Vaultside Mega City Generator activated. Building Ultimate Modern City..."
4. Wait while the city assembles around the block's location. When complete, a level-up sound plays, totem particles burst, and a chat message confirms every district is ready to explore.
5. Start at the central spawn hub and branch out to explore the city.

Tip: Place the generator on a flat, open area to give the city room to build without overlapping existing terrain or structures.

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Overview

Vaultside Ultimate City is a Bedrock add-on that generates a complete, fully detailed modern metropolis called Ultimate Modern City: Vaultside Expansion directly inside your world. A single special block triggers a performance-friendly scripted build sequence that constructs the entire city — no pre-made map download required. The result is a living urban environment ready for survival, creative building, roleplay, storytelling, and multiplayer exploration on Xbox, Windows, Android, and iOS.

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What It Adds

Vaultside Mega City Generator Block

The sole new block added by the mod — and the key to everything. Placing it anywhere in the world instantly begins constructing the full city around that location.

The City — Ultimate Modern City: Vaultside Expansion

Once generated, the world contains a rich, interconnected urban landscape:

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How To Use

Generating the City

• Place the Vaultside Mega City Generator Block on the ground. Generation begins the moment it is placed — no right-clicking or activation item needed.
• The build runs in batches to stay performance-friendly, so the city appears progressively rather than all at once.
• You only need to trigger it once. If you break and re-place the block in the same location after the city has already been generated, the generator will not rebuild.

Exploring

• Begin at the central spawn hub, which anchors the road network connecting all districts.
• Follow the roads outward to reach the airport, harbor, beach, and theme park.
• The vault entrance is a prominent above-ground structure — a natural focal point for roleplay and storytelling.

Playing in the City

• Survival: Use the existing buildings and infrastructure as a foundation, gather resources from the world, and build your life within the metropolis.
• Creative: Build on top of the generated infrastructure, extend neighborhoods, or customize existing structures.
• Multiplayer: The central spawn hub and labeled districts make it easy for multiple players to spread out, claim areas, and collaborate.

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Crafting And Obtaining

The Vaultside Mega City Generator Block is available in the creative inventory under the Construction tab. In survival, craft it at a crafting table. The recipe unlocks once you have a Beacon in your inventory.

The block requires mid-to-late game materials, reflecting the scale of what it creates:

• Beacon (center) — the recipe unlock trigger
• Gold Ingots (corners)
• Emeralds (top and bottom center)
• Redstone (left and right center)

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Abilities And Mechanics

• One-time generation: The generator detects whether the city has already been built at a location and will not run a duplicate build.
• Batched building: The city is constructed in small increments each game tick to avoid freezing or crashing Bedrock devices, even on mobile.
• Completion signal: When the city finishes generating, a level-up sound plays for all players and totem particles erupt above the generator block, making it easy to know when it's safe to start exploring.
• Breakable block: The generator block can be mined with a pickaxe (takes about 3 seconds) and has solid explosion resistance, so it won't be accidentally destroyed.

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Progression And Strategy

• Plan your placement. The city generates outward from the block's position. Choose a large, open area — ideally at sea level on a flat biome — to prevent buildings from clipping into hills or bodies of water.
• Craft the generator in mid-game. You'll need a Beacon, which requires a Nether Star from the Wither. Treat the city build as a major milestone reward after defeating the Wither.
• Use the spawn hub as a base. The central hub connects all districts via the road network. Set your spawn or establish a home there for easy access to every part of the city.
• Layer your own builds on top. The city's streets, parks, and empty lots are designed as a canvas. Add your own interiors, underground networks, or extended districts without breaking the existing layout.
• Multiplayer district claims. With so many distinct neighborhoods — airport, harbor, stadium, theme park, suburbs — large multiplayer groups can each claim a district and develop it independently.