SMP Vector mod
by PurpleDustus
With SMP Vector installed, players face several independent vector systems that change how they interact, trade and survive on a server.
What it does
SMP Vector is a NeoForge mod for 1.21.1 that the author describes as a social experiment disguised as a gameplay mod. Its vector systems are about balance, progression and fairness, and each one can be turned off through gamerules. Several vectors can be combined, and they can also clash with one another, so the result depends on which systems are active on a given server.
Each player receives one virus that stays with them permanently. Viruses adapt and evolve over time, and they can lock a player into a particular playstyle. Some viruses evolve into tank-like forms, some act from shadows, and damage can be reflected back at the attacker. Positions can shift without warning, so assumptions that felt safe may stop being safe.
Rare anomalies can manifest as extreme, situational items that are dangerous to others and useful to the user. A manifest appears only after one player kills another. Vectors are designed not to coexist peacefully, and power in the mod is tied to sacrifice and conflict. SMP Vector is client and server, is published for NeoForge, and is released under All rights reserved, so it is not open source.
Key features
Independent vector systems
Several vector systems run separately, can be combined, and are able to clash with one another on the same server.
Permanent viruses
Each player gets one virus that stays with them, adapts over time and can lock their playstyle.
Reflected damage and shifting positions
Damage can reflect back at the attacker, and positions can shift so that familiar safe spots stop being safe.
Manifest items
Rare items appear only after a player kills another, and they carry extreme, situational effects.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players and server owners who want a multiplayer experiment built around conflict, balance and fairness rather than standard progression.
How it compares
Moonstone :Virus is a NeoForge mod for 1.21 – 1.21.1 that is also client and server and under All rights reserved, so it is not open source. Social Isolation is a NeoForge mod for 1.21.1 that is server required with the client optional and released under the MIT License. Power SMP is a NeoForge mod for 1.21.4 that is client and server and under All rights reserved, so it is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| SMP Vector mod | NeoForge | 1.21.1 | Client and server | 2026-03-30 |
| Moonstone :Virus | NeoForge | 1.21 – 1.21.1 | Client and server | 2025-07-11 |
| Social Isolation | NeoForge | 1.21.1 | Server required, client optional | 2026-05-27 |
| Power SMP | NeoForge | 1.21.4 | Client and server | 2025-08-27 |
Questions
Does SMP Vector need to be installed on both sides?
Can the vector systems be switched off?
Which game version does SMP Vector support?
In the catalog
SMP Vector mod is one of 2,072 Economy mods on ModsFinder, and one of 917 Economy mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from PurpleDustus
Similar mods
What the author says
A social experiment disguised as a Minecraft mod. This mod is not about balance. It’s not about progression. And it’s definitely not about fairness.
Official listing
- Modrinth page
- modrinth.com/mod/smp-vector-mod
- Owner
- PurpleDustus
- Published
- 2026-01-18
- Updated on Modrinth
- 2026-03-30
- Facts verified
- 2026-10-15