You need no DLC to play Survive the Storm. It runs on the base game and on any mix of add-ons, and it never warns you about a missing one. What you own only changes which extras show up, and each one tips the difficulty a little. This page lists how the mod treats every add-on.
| Add-on | If you own it | How it tips the difficulty |
|---|---|---|
| Below and Beyond | Switched off, even if you own it: no Underground, no asteroids, no Exotic Minerals, and its mysteries and commanders never appear | No change - the game plays exactly the same with or without it |
| Martian Express | Fully added: Trains, Stations and Tracks, all its techs, and the Transport Tycoon commander | Mixed - more transport and options make some things easier, but its techs crowd the research fields, which can make research slower |
| Green Planet | Terraforming is fully active; greening the planet winds the escalation clock back | A little easier - terraforming eases the late-game escalation, but it is expensive to raise, so the relief is modest |
| In-Dome Buildings Pack | Its extra in-dome buildings are available, rebalanced by the mod | Slightly easier - a few solid extra buildings, so more tools |
| Colony Design Set | Its extra small and large buildings are available, rebalanced by the mod | Slightly easier - a few solid extra buildings, so more tools |
| Project Laika | The Ranch and its animals are available, rebalanced by the mod | Slightly easier - one more way to make Food |
| Mysteries Resupply Pack | Its three mysteries join the pool you pick from | More variety - three more possible mysteries, no easier or harder in itself |
| Space Race | Adds Brazil and Japan to the pool of possible trade partners (their Food and Metals trades) | More variety - which partners can turn up, not more trades; no easier or harder |
| Marsvision Song Contest | Adds one radio station | No change - music only |
| Deluxe Edition | Adds cosmetic building skins and a radio station | No change - looks and music only |
Part of the Survive the Storm mod. See also Escalation to sol 201, Commanders and Trading.