Minecraft but the Floor Changes Every Day
Minecraft but the Floor Changes Every Day replaces the floor of a superflat world with a different block each in-game day, and it is set up when a new world is created.
What it does
The pack is a superflat challenge: each in-game day the floor under the player changes to another block, so the terrain shifts over time. It can only be used on a new world, since pre-existing worlds cannot be converted. Three dimensions are converted to superflat terrain affected by the floor change, and the dimension holding the structures and mobs needed to beat the game is among them.
The server must run the pack, while players may join without installing it, since only the server side needs it. It is distributed for Fabric, Forge and NeoForge, and as a data pack for server platforms, with files covering 1.20 – 26.2. The code is under All rights reserved and is not open source. Credit to AmbiguousChameleon is required in video content and in any link to the pack.
Key features
Daily floor change
The floor block changes once per in-game day across the superflat terrain, so each day starts on a different surface.
Chunk-level block choice
A single chunk can be set to a chosen block, letting players pick the floor of a given area individually.
Randomizer commands
Commands such as ac.sf randomizer.change block change the floor block held in the main hand, and ac.sf randomizer.add day moves time to the next day.
Optional toggles
Disco chunks and TNT spawning on the floor are off by default and can be enabled with ac.sf randomizer.disco chunks and ac.sf randomizer.enable tnt.
Gallery
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 versions with builds
1.20.x5 of 5 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Superflat challenge runs
Players start a new world with the pack and try to reach the end while the floor keeps changing each day.
Video content
Creators can record a run of the pack, provided they credit AmbiguousChameleon and link the pack description or comments.
Who it’s for: Players who want a superflat challenge, and server owners who run the pack for groups that start new worlds together.
How it compares
Daily Expansion is a server-side only mod for Fabric and Forge across 1.21 – 1.21.11, under the Apache License 2.0, so it differs in loaders and license. OneLayer is server-side only for Forge and NeoForge across 1.20 – 26.3 and is under All rights reserved. Border Expands Per Day runs on the server and is optional on clients, covers 1.14 – 1.21.3 across four loaders, and is also under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Minecraft but the Floor Changes Every Day | Fabric, Forge and NeoForge | 1.20 – 26.2 | Server required, client optional | 2026-07-18 |
| Daily Expansion | Fabric and Forge | 1.21 – 1.21.11 | Server-side only | 2026-07-07 |
| OneLayer | Forge and NeoForge | 1.20 – 26.3 | Server-side only | 2026-10-12 |
| Border Expands Per Day | Fabric, Forge, NeoForge and Quilt | 1.14 – 1.21.3 | Server required, client optional | 2024-11-27 |
Questions
Can the pack be added to an existing world?
Does the server need the pack, or can players join without it?
Which game versions does the pack support?
In the catalog
Minecraft but the Floor Changes Every Day is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 13,894 mods support Minecraft 26.2.
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What the author says
## Overview This pack must be installed during new world creation! It can't be used on pre-existing worlds. This is a superflat challenge where at the start of every day, the entire floor changes to a different block. All 3 dimensions have been converted into superflat terrain and are each affected by the floor…
Official listing
- Owner
- AmbiguousChameleon
- Published
- 2024-12-22
- Updated on Modrinth
- 2026-07-18
- Facts verified
- 2026-10-15