One Tick One Block
by TeamCatBoyz
One Tick One Block is a Fabric and NeoForge tool mod that deletes, replaces or creates blocks within chunks on a chosen schedule, for world editing and map creation.
What it does
Players set how many blocks are deleted, replaced or created per game tick within a one-chunk radius, so the effect spreads gradually across the world. Filters decide which block types the mod acts on, and an empty selection field lets it act on random blocks. Blocks are created from the bottom upward, and an entire chunk can be filled with a single block type such as dirt or sand.
The mod covers any placed block, including torches, paintings, doors and saplings, and it works with blocks from other mods. Its optimization skips block state checks, and an active function stops by itself after 10 seconds to limit frame rate loss. Both the server and every player need it. The mod is published for 1.21.1, 26.1 and 26.2, with 1.2.0 for 26.2 as the latest file on both loaders, under a custom license. Effortless Building is an optional dependency that can be added alongside it.
Key features
Timed block deletion
Deletes a set number of blocks per tick within a chunk, with a random mode when no block type is chosen.
Timed block replacement
Swaps chosen block types for others at a set rate, for example stone for bedrock, or random blocks for random blocks.
Timed block creation
Places blocks within a chunk at a set rate, building upward from the bottom, or fills a whole chunk with one type.
Automatic stop
An active function shuts off by itself after 10 seconds, which limits the frame rate impact of long runs.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Optional 1
Use cases
Map creation
Creators can clear, reshape or fill areas of a world gradually, watching each tick's changes build up.
Chaotic play
Players who want random terrain changes across a world can run the random modes and let the blocks shift over time.
Who it’s for: World editors, map creators and players who want gradual, scheduled terrain changes in single-player or on a server. Both server and clients need the mod.
How it compares
Bedrock placing is a Fabric and NeoForge mod for 1.21.1 – 26.3 that is client-side only, released under the Apache License 2.0. TickTweak is a Fabric mod for 1.20.3 – 26.2 that is server required and client optional, released under the MIT License. One Tick One Block differs by requiring both sides and by its custom license, while covering block deletion, replacement and creation within chunks.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| One Tick One Block | Fabric and NeoForge | 1.21.1 – 26.2 | Client and server | 2026-07-31 |
| Bedrock placing | Fabric and NeoForge | 1.21.1 – 26.3 | Client-side only | 2026-09-16 |
| TickTweak | Fabric | 1.20.3 – 26.2 | Server required, client optional | 2026-07-03 |
Questions
Does One Tick One Block need to be installed on both sides?
Which loaders does One Tick One Block support?
Is Effortless Building required?
In the catalog
One Tick One Block is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 13,894 mods support Minecraft 26.2.
More from TeamCatBoyz
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What the author says
You can choose specific blocks for the mod to interact with. This includes absolutely anything that can be placed: blocks, torches, paintings, doors, saplings, and more. Blocks from other mods are supported as well. There are no limits on numerical values. If FPS drops to 0, the active function will automatically…
Official listing
- Modrinth page
- modrinth.com/mod/one-tick-one-block
- Owner
- TeamCatBoyz
- Published
- 2026-07-31
- Updated on Modrinth
- 2026-07-31
- Facts verified
- 2026-10-15