Split Self
by Pryzmm
Split Self is a horror adventure mod for Fabric that puts an alternate version of the player's character into the world they built.
What it does
The alternate self, left behind by the player, tries to escape the world it is trapped in. It interacts with the world and with other things, acting on the ways it believes will open its cage, and it can break parts of a world, attack the player and speak to the player directly. The mod is aimed at immersion, and its story is built around the idea that the player's past choices have consequences.
Split Self is a client and server mod, so the server and every player need it. It is published only for Fabric, for 1.21.1, with a Fabric API requirement. The latest file is 1.0.2-UNSAFE for 1.21.1, dated 2026-10-05. The code is not public under an open source license, as the mod is licensed as All rights reserved, though a source code link and an issue tracker are available.
Key features
Hostile alternate self
An alternate version of the player acts against the world and the player, with events that escalate over the course of play.
Direct messages
The alternate self speaks to the player personally, so the horror is aimed at the player rather than at the character.
World interference
The entity interacts with the world in ways meant to free it, including changes that can break parts of a world.
Events that touch the system
Some events interact with the device outside the game, and may trigger an antivirus alert. The author states that changes are reversible.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Horror playthroughs
Players who want a story-driven horror experience inside a survival world can run the mod in single-player.
Multiplayer horror
Server owners who want a shared horror event can run the mod on a server, as long as every player has it installed.
Who it’s for: Players who want a horror experience with flashing lights, an antivirus warning and events that reach outside the game, and who accept that the mod may change or break a world. The author recommends against playing it for anyone with a history of seizures or who is unsure whether they are epileptic.
Questions
Does Split Self need Fabric API?
Does the server need Split Self?
Will Split Self affect the computer it runs on?
In the catalog
Split Self 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.
More from Pryzmm
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What the author says
Trapped in the world you made, by the decisions you made, trying to claw their way out by any means necessary... you monster. Split Self is an immersive horror Minecraft mod aimed towards an alternate version of yourself — one that was left behind by you. They will interact with your world, and other things, in ways…
Official listing
- Modrinth page
- modrinth.com/mod/split-self
- Owner
- Pryzmm
- Published
- 2025-06-29
- Updated on Modrinth
- 2026-10-05
- Facts verified
- 2026-10-15