RZero
by Reset171
RZero, a Re:Zero-inspired mod, replaces death respawn with a rollback that returns the whole world to the last saved checkpoint.
What it does
When a player dies, the game state is restored to the most recent checkpoint instead of a normal respawn. Rolling back restores the world clock, weather, raid progress, Ender Dragon phases, scoreboard values, boss bars, world border settings and force-loaded chunks. Checkpoints can be made by hand with a key, or created automatically in fixed or random intervals or when the mod judges danger to be near.
Repeating the same actions after a rollback is meant to produce the same results. The mod adjusts its random number generator logic and aligns mob spawning with the world seed, so loot, mob drops, raid positions and spawn coordinates match the original timeline. The mod is open source under the GNU General Public License v3.0 only. It needs Cloth Config API and Fabric API, and Mod Menu is optional. Files are published for Fabric and NeoForge for 1.21.1, with 0.2.10 as the latest beta on both loaders.
Key features
Whole-world rollback
On death the world state reverts to the last checkpoint, not only the player's inventory and position.
Checkpoint modes
Checkpoints can be set manually, at fixed or random timer intervals, or adaptively when nearby threats and player health suggest danger.
Repeatable outcomes
Random events, combat, chest loot and mob spawns are kept reproducible so a replayed timeline matches the original.
Client-side visual smoothing
Camera transitions, damage tilt, item-switching animations and interface search queries are adjusted during rollbacks.
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.
Required 2
Optional 1
Use cases
Challenge runs
Players who want to take risks in combat can rely on the rollback as a second chance without restarting the world.
Who it’s for: Players of the 1.21.1 adventure and survival games who want deaths to rewind time, and server owners who want to offer that mechanic to their players.
How it compares
Return by Death is a Fabric-only mod for 26.1.2 – 26.2, with All rights reserved licensing, so it is not open source. DeathRollback is a Fabric mod for 1.21 – 1.21.1 under the MIT License, and it is open source. Revive By Death covers Fabric, Forge and NeoForge for 1.20.1 – 1.21.1 and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| RZero | Fabric and NeoForge | 1.21.1 | Client and server | 2026-09-24 |
| Return by Death | Fabric | 26.1.2 – 26.2 | Client and server | 2026-07-03 |
| DeathRollback | Fabric | 1.21 – 1.21.1 | Client and server | 2026-05-31 |
| Revive By Death | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-10-06 |
Questions
Does RZero need Fabric API on NeoForge?
Does RZero have to be installed on both sides?
Can a checkpoint be set without waiting for the timer?
Which game versions are supported?
In the catalog
RZero is one of 19,031 Adventure mods on ModsFinder, and one of 10,052 Adventure mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
A mod inspired by the "Return by Death" concept from Re:Zero. It replaces the standard death and respawn mechanics with a world rollback: upon death, the game state returns to the last saved checkpoint. To prevent divergence from the original timeline, internal random number generator (RNG) logic is adjusted…
Official listing
- Modrinth page
- modrinth.com/mod/rzero
- Owner
- Reset171
- Published
- 2026-05-28
- Updated on Modrinth
- 2026-09-24
- Facts verified
- 2026-10-15