VoxelCraft – Multiplayer Sandbox Engine

Complete voxel sandbox framework: infinite worlds, survival, crafting, creatures, weather, full saving and optional multiplayer with dedicated servers. Build your block game without code.

World
• Infinite chunk-based voxel world (16³ chunks) with streaming
• Procedural generation: terrain, biomes, caves, ores, seas, beaches, structures
• Deterministic by seed, with multiple world types
• Sky light and block light with smooth lighting
• Biome-based weather: rain, snow and thunderstorms
• Day and night cycle
• Burst-compiled jobs for generation, lighting and meshing

Blocks
• Texture per block side, with a texture array
• Shapes: slabs, stairs, fences, gates, doors, trapdoors, ladders, panes, plants, beds, fluids, signs
• Writable signs
• Falling, explosive and damaging blocks
• Tool-based block transformation, for example a hoe turns soil into farmland

Gameplay
• Tool classes, material tiers, block hardness and drops
• Per-item durability for tools and armor, with repair
• Inventory, hotbar, chests, crafting (shaped and shapeless) and smelting
• Health, hunger, regeneration, death, respawn, beds
• Farming: seeds, growth stages, watering, harvest
• Creatures: walking, flying and swimming; passive, neutral and hostile; breeding and spawn rules
• Boats and rideable vehicles
• Skin shop with gold and an in-app purchase API

Saving
• Complete saving: world, players, inventories, chests, furnaces, creatures, signs
• Versioned save format, older saves still load
• Autosave and atomic file writes

Multiplayer (optional)
• Host any saved single-player world online or create a new one
• All multiplayer progress is saved per player in the host’s world along with teams plots ...
• Game list, join codes, private games
• Unity Relay, no port forwarding needed
• Dedicated server builds for Windows and Linux
• Dedicated server console: list, say, kick, save, backup, stop and all admin commands
• Automatic server backups
• Teams with invites; teammates cannot hurt each other
• Land claims for teams: protected building, chests and doors, with size based on team size
• PvP on or off
• Teleport requests (/tpa)
• Spawn protection area
• Operators, kick, ban, whitelist
• Admin commands: time, weather, teleport, give items
• Chat with commands
• Host-authoritative with server-side hit, shot and edit validation
• Content check: only players with identical content can join (no different game versions)
• Can be removed completely, the game compiles without network packages

Editor Tools
• 14 Creator wizards: Block, Item, Recipe, Tool Tier, Crop, Structure, Biome, World Preset, Mob, Interaction, Vehicle, Character Builder, Multiplayer Setup, Pixel Painter
• Content Check finds missing or broken content
• Every wizard has validation, Undo and in-window help

Platforms and Input
• PC: keyboard and mouse, gamepad
• Mobile: touch controls with joystick, look area and buttons
• One shared input action set

Requirements
• Unity 6.3 or newer, URP
• Input System, Burst, Collections, Mathematics, uGUI and TextMeshPro
• Multiplayer: Netcode for GameObjects 2.x and Multiplayer Services 1.x

Included
• Playable sample game with main menu
• Sample blocks, items, recipes, biomes, structures, creatures, weather, sounds and skins
• User guide and technical reference

Limitations
• No modding or runtime scripting for players

• All blocks, items, players etc. are based on textures. No 3D model support.

Build your own block game, without writing code.

Voxel Sandbox Framework is a complete foundation for survival and building games in the style of classic block sandboxes. No coding required, everything works trough Wizards. No 3D models needed, everything is created using textures with the included pixel texture painter.

Demo (PC and Mobile)

Demo builds

Discord

https://discord.gg/uUfQuUWPCR

YouTube Tutorials

· Blocks and Items: https://youtu.be/sAJNdfDOEA8

· World and Biomes: https://youtu.be/vfLzNTpjHAg

· Utilities and Texture painting: https://youtu.be/cp3GDPYUvQc

· Mobs and Vehicles: https://youtu.be/VgnUy4EKzs8

· Player and Multiplayer: https://youtu.be/_OFqwLVMLnk

Endless Procedural Worlds

• Infinite chunk-based worlds with smooth streaming

• Seed-based generation: mountains, caves, ores, seas, beaches and biomes

• Biomes with their own climate, ground layers, snowy peaks and weather

• Trees, rocks and houses placed by the world generator, built in the Structure Creator

• Day and night cycle with sky light and block light

Survival and Crafting

• Mining with tool classes, material tiers and block hardness

• Tools and armor that wear out and can be repaired

• Inventory, hotbar, chests, crafting table and furnace

• Health, hunger, regeneration, beds and respawn points

• Farming with seeds, growth stages, watering and harvest

• Doors, stairs, slabs, fences, ladders, glass panes, torches and writable signs

Living Creatures

• Passive, neutral and hostile creatures

• Walking animals, flying birds and swimming fish

• Day and night spawning, breeding and item drops

• Create your own with body templates and pixel skins in the Mob Creator

Weather

• Rain, snow and thunderstorms depending on the biome

• Roofs keep the rain out, and rain waters your fields

• Sounds and lightning included

Save System

• World, players, inventories, chests, furnaces, creatures, signs, teams and land claims

• Autosave and safe file writing

• Versioned save format: old saves keep working after you update your game

Multiplayer: Host your Worlds and Dedicated Servers

Any single-player world can be opened for friends with one click.

Each player’s inventory, position and progress is saved in the host’s world and is waiting for them when they come back.

• Join through the game list or a join code, private games possible

• Runs through Unity Relay, no port forwarding needed

Dedicated servers

• For Windows and Linux, built with one click from the editor

• Automatic server backups

• Host-authoritative with server-side checks of hits, shots and block changes

• Only players with the same game content can join

• Fully optional: turn it off and the game compiles without any network package

• Dedicated server commands

Host and server options

•PvP on or off

•Teams

•Land claims

•Teleport requests

•Spawn protection

•Private games

•Player limit

Player commands

• /help shows all commands available in the game

• /team create <name>, /team invite <player>, /team join <name>, /team leave, /team list

• /tpa <player>, /tpa accept, /tpa deny

•/spawn (not allowed if the player is in a pvp fight)

• /claim, /claim info, /claim list, /unclaim, /unclaim all

Land claims for teams

• Teams claim land chunk by chunk.

•Only members can build, mine, open chests and use doors there.

• Bigger teams can claim more land.

• Land around the spawn can never be claimed. PvP still works inside claims.

Admin commands (operators)

• /op <player>, /deop <player>

• /kick <player>, /ban <player>, /unban <player>

• /whitelist on | off | list | add <player> | remove <player>

• /time day | noon | night | midnight

• /weather clear | rain | storm [seconds]

• /tp <player> [target]

• /give <player> <item> [amount]

Dedicated server console

• list shows all players with team and position

• say <text> sends a message to everyone

• kick <player> removes a player

• save saves the world

• backup saves the world and creates a backup

• stop saves and shuts the server down

• All admin commands also work here, without the slash

Creator Wizards

Block Creator · Item Creator · Recipe Creator · Tool Tier Setup · Crop Creator · Structure Creator · Biome Creator · World Preset Creator · Mob Creator · Interaction Creator · Vehicle Creator · Character Builder · Multiplayer Setup · Pixel Painter · Content Check

Every wizard explains each step in the window, checks your input with clear messages, supports Undo and never overwrites your assets.

PC and Mobile

•Keyboard and mouse, gamepad and touch controls from one shared input set.

•On Mobile joysticks and buttons appear automatically.

•View distance, lighting quality, weather particles and creature limits can be adjusted for weaker devices.

More

Boats and rideable vehicles

Skin shop with gold and an in-app purchase API preparation

Perfect for: survival sandbox games, creative building games, multiplayer block worlds, mobile crafting games.

Note: Everything is based on Textures and created from them. No 3D Models are supported.