---
title: "Stellaris 4.3.6 \"Cetus\": Three Major DLCs Now Free in Base Game"
description: "Paradox bundles Utopia, Synthetic Dawn and Humanoids into the Stellaris base game with patch 4.3.6 Cetus. Hive Minds, Machine Empires and Megastructures now free for all PC players."
url: https://after-strategy.com/en/stellaris-4-3-6-cetus-utopia-synthetic-dawn-free-2026/
lang: en
published: 2026-05-14
updated: 2026-05-16
author: "Simon Dougnac"
author_url: https://after-strategy.com/en/auteur/simon/
game: "Stellaris"
game_url: https://after-strategy.com/en/jeux/stellaris/
categories: [grand-strategy, 4x]
tags: [stellaris, patch-4-3-6, cetus, utopia, synthetic-dawn, humanoids, edition-2026]
translations:
fr: https://after-strategy.com/fr/stellaris-4-3-6-cetus-utopia-synthetic-dawn-gratuit-2026/
es: https://after-strategy.com/es/stellaris-4-3-6-cetus-utopia-synthetic-dawn-gratis-2026/
publisher: "After Strategy"
---
# Stellaris 4.3.6 "Cetus": Three Major DLCs Now Free in Base Game
> Paradox bundles Utopia, Synthetic Dawn and Humanoids into the Stellaris base game with patch 4.3.6 Cetus. Hive Minds, Machine Empires and Megastructures now free for all PC players.
## Stellaris Turns 10: Paradox Gifts Founding DLCs to All Players
On **May 11, 2026**, Paradox deployed patch **4.3.6 "Cetus"** for Stellaris — and this is no ordinary update. As part of the game's **10th anniversary celebrations**, three previously paid DLCs are now included directly in the base game for all PC players:
- **Utopia** (2017) — megastructures, hive minds, ascension paths
- **Synthetic Dawn Story Pack** (2017) — machine empires, synthetic rebellions
- **Humanoids Species Pack** (2017) — 10 portraits, Clone Army origin, galactic skinset
These three DLCs collectively represented around $35-40 on Steam. In exchange, the base game price increases by approximately $10 (or local equivalent). For new players, the day-one experience is now dramatically richer.
### Table of Contents
- [Utopia: Hive Minds and Megastructures for Everyone](#h-utopia)
- [Synthetic Dawn: Machine Empires Enter the Base Game](#h-synthetic-dawn)
- [Humanoids Species Pack](#h-humanoids)
- [Other Cetus Patch Features](#h-cetus-features)
- [Price Impact and Existing Owners](#h-price)
### Utopia: Hive Minds and Megastructures for Everyone
**Utopia** was consistently the first DLC recommended to any Stellaris newcomer since 2017. With Cetus, its features join the base game:
- **Megastructures**: Dyson Sphere, Science Nexus, Deep Space Citadel — civilization-scale projects that span in-game decades
- **Orbital Habitats**: artificial colonies orbiting any planet, invaluable for dense systems
- **Ascension Paths**: three major routes (biological, synthetic, psionic) to fundamentally transform your species
- **Hive Minds**: the most popular gestalt mechanic — your pops share a collective consciousness, bypassing politics and factions
- **Fanatic Purifiers, Indoctrination, Advanced Slavery**: tools for the most aggressive empire builds
### Synthetic Dawn: Machine Empires Enter the Base Game
**Synthetic Dawn** (2017) introduced a radical alternative to organic empires: **Machine Intelligence**. Now accessible to all:
- **Machine Empire**: a fully distinct empire type with its own population mechanics (robot pops don't consume food or happiness), unique policies and narrative arc
- **Synthetic rebellions**: your robots can revolt and form their own empire mid-game — one of the most memorable lore events in strategy gaming
- **Fallen Machine Empire**: a unique late-game adversary with its own agenda
- **7 machine portraits** and dedicated story events
For players drawn to transhumanist sci-fi or AI civilizations, this is one of the most distinctive offerings in the 4X genre.
### Humanoids Species Pack
Less mechanically transformative, **Humanoids** primarily enriches visual options and adds a few civics:
- **10 new humanoid portraits** for species customization
- **Humanoid ship skinset** with a distinct aesthetic
- **Clone Army** (origin): start as a civilization born from genetically optimized soldier-clones, with unique constraints and advantages
- **Civics**: Master Artificers, Pleasure Seekers, Pompous Purists — three additional governance orientations
### Other Cetus Patch Features
Patch 4.3.6 goes beyond a simple bundle. Introduced progressively since the 4.3.0 open beta in late 2025:
**Portrait Substitution System** — a fully scriptable modding framework that automatically replaces portraits. The official application: an **Arachnophobia Mode** that substitutes arachnid species with alternative sprites. Fully open to the modding community.
**Fleet Sliders** — Advanced Galaxy Settings now include multiplier sliders for **Naval Capacity** and **Command Limit** (×0.5 to ×5). Build games with tiny skirmish fleets or titanic armadas as you see fit.
**Economic Overhaul** — the full 4.3 cycle flattened Stellaris's economy, reducing exponential non-linear growth loops in favor of more deliberate management where each modifier matters.
**Behemothkin Portrait** — an exclusive portrait gifted to players connected to a Paradox account.
### Price Impact and Existing Owners
The ~$10 base game price increase is real. For **new players**, the equation remains favorable: immediate access to the full experience (Hive Minds, Machine Empires, Megastructures) without additional purchases.
For **existing owners** of these DLCs: no refunds, but those DLCs were already in your library. The perceived value remains intact — and with Cetus, your base game now includes this content even on a fresh reinstall.
### A Good Time to Start (or Return)
With Cetus, Paradox crosses a threshold: Stellaris is no longer a game you "buy then complete with DLC". The base game alone now delivers the core of what makes Stellaris unique — the ability to build radically different civilizations, from Hive Mind to Machine Empire.
If you've been hesitating for years, patch 4.3.6 is a serious entry point. If you haven't played in a long time, it's a good reason to rediscover a galaxy that has changed enormously.
Going further: our [top 10 best Stellaris mods 2026](https://after-strategy.com/en/stellaris-best-mods-2026-top-10-complete-guide/) and the [complete console commands guide](https://after-strategy.com/en/stellaris-console-commands-cheats-complete-guide-2026/).
## Sources
- [Official Steam page for Stellaris](https://store.steampowered.com/app/281990/Stellaris/)
- [Official Stellaris website](https://www.paradoxinteractive.com/games/stellaris)
## Frequently asked questions
### Which DLCs are now free in Stellaris?
Since patch 4.3.6 Cetus on May 11, 2026, **Utopia**, **Synthetic Dawn** and the **Humanoids Species Pack** are included in the base game at no extra cost for all PC owners.
### Did the price of Stellaris increase with patch 4.3.6?
Yes. The base game price increased by approximately **$10** (or local equivalent), but it now includes three formerly paid DLCs that were collectively worth ~$35-40.
### Are existing DLC owners refunded?
No. If you already owned Utopia, Synthetic Dawn or Humanoids, they remain in your library but **no refund is planned**. Paradox compensates with the free Behemothkin portrait for connected accounts.
## Sources
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Source : [Stellaris 4.3.6 "Cetus": Three Major DLCs Now Free in Base Game](https://after-strategy.com/en/stellaris-4-3-6-cetus-utopia-synthetic-dawn-free-2026/) — After Strategy