Genetic Playground
by bingybing7
Players who want to edit mob genetics on NeoForge 1.21.1 can use Genetic Playground, a server-side mod that adds a genetics system, energy cables and lab-themed decoration.
What it does
The mod centers on a genetics system. Blood is taken from supported mobs, and the samples are turned into syringes, cells, DNA and plasmids that can be held in the creative inventory and carry NBT tags. The first blood step covers a set of farm animals, along with Enderman, Cod, Salmon and Creeper. Planned work includes a survival-craftable mob spawner, character models for other mobs, fusion power, vaccines and possibly plant and crop genetics.
Power is handled by three energy sources, and the mod adds three cable tiers to move it. Aluminium cable carries 5 kFE/t, gold carries 50 kFE/t and netherite carries 500 kFE/t. The author notes that long networks lose energy and suggests a different cable mod for those. The mod also adds a large set of materials, including lead, uranium, aluminium and an unknown alloy, which are mainly used for nuclear fission at this stage.
Genetic Playground is published for NeoForge only, with the 1.0.1 file for 1.21.1 released on 2025-10-28. It runs server-side only, so players join without installing it. The code is not open source and is under All rights reserved. A public wiki exists for the mod.
Key features
Genetics pipeline
Blood, syringes, cells, DNA and plasmids form a chain that edits mob data through NBT tags.
Three energy sources
Solar energy, heat generators and fission plants are listed as the power options in the current version.
Three cable tiers
Aluminium, gold and netherite cables carry 5, 50 and 500 kFE/t respectively.
Lab decoration set
Dyeable strobe lights, sirens, biohazard signs and diorite or quartz lab bricks in five variations.
Interactive lab blocks
Right-clicking a siren plays one of three alarm chimes, and the biohazard signs cycle through colours.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Genetic Playground need to be installed on the client?
Which mobs does the first blood step cover?
Is the genetics system finished?
In the catalog
Genetic Playground is one of 8,499 Technology mods on ModsFinder, and one of 3,557 Technology mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
⚠ Getting syringes, cells, DNA or plasmids from the creative inventory will currently not work as they use NBT tags from the mob that said blood was taken from. Currently in Version 1.0.0 you have to take the blood from one of the supported mobs and do the whole process, sorry for inconvinence. ⚠ Planned features…
Official listing
- Modrinth page
- modrinth.com/mod/genetic-playground
- Owner
- bingybing7
- Published
- 2025-10-28
- Updated on Modrinth
- 2025-10-28
- Facts verified
- 2026-10-15