Underfoot TNT Addon

A chaotic Minecraft Bedrock minigame where the ground beneath your feet turns into TNT in real time. Keep moving, or watch the world blow up around you.

Features

Underfoot TNT conversion: Every tick, the block beneath each participant's feet transforms into a TNT block. Half-blocks (slabs, trapdoors, doors, fences, fence gates, carpets, etc.) are placed at the player's feet level instead.
Damage = Explosion: Taking damage from a mob or from another TNT explosion spawns a primed TNT at your location — creating brutal chain reactions.
Smart block preservation: Water, lava, obsidian, bedrock, end portal frame, beds, portals are protected by default. Creative-only blocks (barrier, command_block, structure_void, etc.) are permanently protected.
Toggle protection categories: In the settings menu, you can turn off protection for water / lava / obsidian / bedrock / end portal frame / bed / end portal / nether portal individually.
Terrain destruction ON / OFF: Optional toggle to prevent explosions from breaking terrain (great for arena play).
TNT drops blocked: Breaking a TNT block by hand or via explosion does not drop the TNT item.
Bilingual UI: Switch between Japanese and English in-game via the settings menu or /tnt:lang_ja / /tnt:lang_en commands.
Countdown intro: 3-2-1-START with sound and title effects.
Custom completion sound: Java-style achievement sound on game end.
JSON UI background: Custom menu screen with background art (marker-based server_form override, won't affect other ActionForms).

Commands

Command	Permission	Description
`/tnt:start`	GameDirectors	Start the game (all online players join, 3s countdown)
`/tnt:stop`	GameDirectors	Stop the game
`/tnt:menu`	Any	Open the main menu (start/stop/participant select/settings)
`/tnt:join`	Any	Join the game (yourself)
`/tnt:leave`	Any	Leave the game (yourself)
`/tnt:lang_ja`	GameDirectors	Switch UI language to Japanese
`/tnt:lang_en`	GameDirectors	Switch UI language to English

How to Play

Apply both Behavior Pack and Resource Pack to your world.
Make sure Beta API is enabled in world settings (uses @minecraft/server 2.7.0).
Run /tnt:start or open the menu and press "Start". Players have a 3-second countdown to position themselves.
Keep moving! The block you stand on turns into a TNT block.
Run /tnt:stop to end the game and play the completion sound.

Requirements

Minecraft Bedrock Edition v1.21.0 or later (recommended: v1.26.0+ for Script API 2.7.0)
Holiday Creator Features (Beta API): enable in world settings
Both BP and RP must be applied together

Tested On

Minecraft Bedrock Windows 10/11 v1.26.x
Multiplayer with 2-4 players

Languages

日本語 (Japanese)
English

Credits

Code & Design: mirinhoshi

License

Distribution terms apply: https://mirin-brog.com/distribution-terms/

✅ Personal use, server use, video & streaming OK
✅ Modify for personal use
❌ Redistribution / repackaging / reupload without permission
❌ Selling or monetized redistribution

Changelog

v2.0.0 (2026-05-24)

Full rewrite to pure Script API (mcfunction removed)
New: settings UI with per-block protection toggles
New: bilingual (JA/EN) support
New: JSON UI background art (marker-based server_form override)
New: 3-2-1-START countdown with sound effects
New: damage from TNT explosions also triggers cascade
New: /tnt:join, /tnt:leave, /tnt:lang_ja, /tnt:lang_en commands
Improved: explosion item drops are auto-cleaned

Underfoot TNT Addon

Features

Commands

How to Play

Requirements

Tested On

Languages

Credits

License

Links

Changelog

v2.0.0 (2026-05-24)