# Vrauks - Stage 4 (technology) internal name `vrauks-mk04` · tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md)) HTML page: https://factorio.kalzumeus.com/tech/vrauks-mk04/ ## Cost 2500 units of (1 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 2 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 3 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 6 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 10 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 20 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 30 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 6 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 300 s each. ## Requires (2) - [Growth hormones](https://factorio.kalzumeus.com/tech/growth-hormone.md) - [Vrauks - Stage 3](https://factorio.kalzumeus.com/tech/vrauks-mk03.md) ## Leads to (1) - [Vrauks - Stage 5](https://factorio.kalzumeus.com/tech/vrauks-mk05.md) ## Unlocks (5 recipes) ### Vrauk (`vrauks-4`) - 70 s · tier 7 · productivity modules allowed - Ingredients: 40 × [Vrauk cocoon](https://factorio.kalzumeus.com/item/cocoon.md), 4 × [Arqad honeycomb](https://factorio.kalzumeus.com/item/honeycomb.md), 3 × [Water barrel](https://factorio.kalzumeus.com/item/water-barrel.md), 2 × [Concentrated seed syrup barrel](https://factorio.kalzumeus.com/item/syrup-01-barrel.md), 4 × [Bedding](https://factorio.kalzumeus.com/item/bedding.md), 1 × [Quality vrauk food](https://factorio.kalzumeus.com/item/vrauks-food-02.md), 1 × [Growth factor](https://factorio.kalzumeus.com/item/gh.md) - Results: 5 × [Empty barrel](https://factorio.kalzumeus.com/item/barrel.md), 16 × [Vrauk](https://factorio.kalzumeus.com/item/vrauks.md) - Made in: Vrauk paddock MK 01, Vrauk paddock MK 02, Vrauk paddock MK 03, Vrauk paddock MK 04 - Unlocked by: [Vrauks - Stage 4](https://factorio.kalzumeus.com/tech/vrauks-mk04.md) ### Vrauk cocoon (`vrauks-cocoon-4`) - 20 s · tier 7 · productivity modules allowed - Ingredients: 4 × [Water barrel](https://factorio.kalzumeus.com/item/water-barrel.md), 4 × [Bedding](https://factorio.kalzumeus.com/item/bedding.md), 3 × [Quality vrauk food](https://factorio.kalzumeus.com/item/vrauks-food-02.md), 5 × [Fawogae](https://factorio.kalzumeus.com/item/fawogae.md), 4 × [Arqad honeycomb](https://factorio.kalzumeus.com/item/honeycomb.md) - Results: 4 × [Empty barrel](https://factorio.kalzumeus.com/item/barrel.md), 40 × [Vrauk cocoon](https://factorio.kalzumeus.com/item/cocoon.md) (32–48) - Made in: Reproductive complex MK 01, Reproductive complex MK 02, Reproductive complex MK 03, Reproductive complex MK 04 - Unlocked by: [Vrauks - Stage 4](https://factorio.kalzumeus.com/tech/vrauks-mk04.md) ### Phase 4 vrauk breeding program (`vrauks-mk04`) - 30 s · tier 7 - Ingredients: 50 × [Vrauk cocoon MK 03](https://factorio.kalzumeus.com/item/cocoon-mk03.md), 3 × [Quality vrauk food](https://factorio.kalzumeus.com/item/vrauks-food-02.md), 1 × [Great alien sample](https://factorio.kalzumeus.com/item/alien-sample-03.md), 4 × [Bedding](https://factorio.kalzumeus.com/item/bedding.md), 8 × [Sap](https://factorio.kalzumeus.com/item/saps.md), 15 × [Native flora](https://factorio.kalzumeus.com/item/native-flora.md), 5 × [Water barrel](https://factorio.kalzumeus.com/item/water-barrel.md) - Results: 0.003 × [Vrauk MK 04](https://factorio.kalzumeus.com/item/vrauks-mk04.md) (0.3% chance), 5.1 × [Vrauk MK 03](https://factorio.kalzumeus.com/item/vrauks-mk03.md) (20% chance of 1–50), 5 × [Empty barrel](https://factorio.kalzumeus.com/item/barrel.md) - Made in: Reproductive complex MK 01, Reproductive complex MK 02, Reproductive complex MK 03, Reproductive complex MK 04 - Unlocked by: [Vrauks - Stage 4](https://factorio.kalzumeus.com/tech/vrauks-mk04.md) ### Vrauk MK 04 (`vrauks-mk04-breeder`) - 30 s · tier 7 - Ingredients: 1 × [Vrauk MK 04](https://factorio.kalzumeus.com/item/vrauks-mk04.md), 1 × [Vrauk cocoon MK 04](https://factorio.kalzumeus.com/item/cocoon-mk04.md), 3 × [Quality vrauk food](https://factorio.kalzumeus.com/item/vrauks-food-02.md), 1 × [Great alien sample](https://factorio.kalzumeus.com/item/alien-sample-03.md), 4 × [Bedding](https://factorio.kalzumeus.com/item/bedding.md), 8 × [Sap](https://factorio.kalzumeus.com/item/saps.md), 15 × [Native flora](https://factorio.kalzumeus.com/item/native-flora.md), 5 × [Sea sponge](https://factorio.kalzumeus.com/item/sea-sponge.md), 5 × [Water barrel](https://factorio.kalzumeus.com/item/water-barrel.md) - Results: 1 × [Vrauk MK 04](https://factorio.kalzumeus.com/item/vrauks-mk04.md), 0.95 × [Vrauk MK 04](https://factorio.kalzumeus.com/item/vrauks-mk04.md) (95% chance), 5 × [Empty barrel](https://factorio.kalzumeus.com/item/barrel.md) - Made in: Vrauk paddock MK 01, Vrauk paddock MK 02, Vrauk paddock MK 03, Vrauk paddock MK 04 - Unlocked by: [Vrauks - Stage 4](https://factorio.kalzumeus.com/tech/vrauks-mk04.md) ### Vrauk cocoon MK 04 (`vrauks-mk04-cocoon`) - 60 s · tier 7 - Ingredients: 2 × [Vrauk MK 04](https://factorio.kalzumeus.com/item/vrauks-mk04.md), 4 × [Vrauk food](https://factorio.kalzumeus.com/item/vrauks-food-01.md), 2 × [Bedding](https://factorio.kalzumeus.com/item/bedding.md), 8 × [Sap](https://factorio.kalzumeus.com/item/saps.md), 15 × [Native flora](https://factorio.kalzumeus.com/item/native-flora.md), 5 × [Sea sponge](https://factorio.kalzumeus.com/item/sea-sponge.md), 5 × [Water barrel](https://factorio.kalzumeus.com/item/water-barrel.md) - Results: 5.5 × [Vrauk cocoon MK 04](https://factorio.kalzumeus.com/item/cocoon-mk04.md) (4–7), 1.98 × [Vrauk MK 04](https://factorio.kalzumeus.com/item/vrauks-mk04.md) (99% chance of 2), 5 × [Empty barrel](https://factorio.kalzumeus.com/item/barrel.md) - Made in: Vrauk paddock MK 01, Vrauk paddock MK 02, Vrauk paddock MK 03, Vrauk paddock MK 04 - Unlocked by: [Vrauks - Stage 4](https://factorio.kalzumeus.com/tech/vrauks-mk04.md)