- Indie
- Simulation
- Strategy
Game
Foundation
Setting to redefine the city-building genre, Foundation puts the emphasis on the organic aspects of urbanism in the cities of old, powered by Polymorph Games’ proprietary game engine, Hurricane, which allows for full mod support and is optimized for the thousands of moving parts that come with building humongous cities. The game features in-depth resource management akin to the Anno (Dawn of Discovery) series, expertly mixed with classic city-building elements from Settlers, SimCity, and Pharaoh all topped with narrative encounters inspired by Crusader Kings II to create the ultimate medieval
Foundation is a grid-less, laidback medieval city-building game with a focus on organic development, monument construction and resource management.
About Foundation
- Released
- January 2025
- Developer
- Polymorph Games
- Platforms
- PC (Microsoft Windows)
Release, studio and platform data from IGDB. Store links go to the sellers, not to us. We do not sell games and we do not host files.
Browse everything
Sorted, filterable and paged. Every link goes to the author’s own download.
From the developers
Official announcements, newest first. Posted on Steam.
- Community AnnouncementsHotfix 1.11.0.19 is liveHello everyone, We've just released a small hotfix to address an issue that could prevent resource transportation in certain situations. Fixed: Moving a production building or storage building could prevent transporters and production workers from collecting resources from that production building.
- Community AnnouncementsPatch 1.11.0.18 is now liveHello everyone, We've just released Patch 1.11.0.18, which addresses the missing grass and cliff textures reported by some players using AMD XT graphics cards. This workaround should resolve the issue for affected players. Changelog Adjusted texture buffer object binding to work around a recent AMD OpenGL driver issue.
- Community AnnouncementsDevlog #21 - Refining the ExperienceHello, city builders! As we move further into 2026, the studio is buzzing with activity. Today, we’d like to take you behind the scenes to share what we have been working on, with a focus on improvements that both enhance the base experience and support upcoming content. Harvest Festival Progress Work on the Harvest Festival DLC is progressing at a strong pace and remains a major focus for the...
- Community AnnouncementsPatch 1.11.0.17 is liveHello everyone, We have just released patch 1.11.0.17, which focuses on a wide range of fixes and addresses several community-reported issues. Full changelog: Gameplay Fixed: Aspirations could be completed without fulfilling all required "sub-quests." Fixed: Estate Specialisation events now respect Aspiration restrictions for objectives, preventing invalid placement options in restricted Monume...
- Community AnnouncementsAnnouncing Our First Major DLC - Foundation: Harvest FestivalHear ye, hear ye, Merrymakers of the Realm! Since we reached our full release, we have been hard at work dreaming up new ways to expand the medieval world you’ve built with us. Today, we are thrilled to pull back the curtain on our very first expansion: Foundation: Harvest Festival. What is Foundation: Harvest Festival? As we looked at where to take Foundation next, focusing on the heart of med...
- Community AnnouncementsHotfix 1.11.0.16 is liveHello everyone, We have just released a small hotfix (1.11.0.16) update: Fixed: Rare crash when finishing construction of some building parts Fixed: Mods were not able to save their data.
- Mods indexed
- 148
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
Most downloaded
Measured from the source's own counts, summed across every release.
- Common ResourcesAdds resources and villager needs required by other mods.657.4k downloads
- Foundation Extended Building FunctionsA set of custom building functions for other mods to take advantage of! Check out mod.io for more details! THIS MOD IS A DEPENDENCY IT DOES NOTHING ON ITS OWN!422.6k downloads
- Fantasy DecorationsA collection of various fantasy and medieval-themed decorations332.6k downloads
- House Addition V5Adds 8 models of houses free to install manually.235.0k downloads
- Villager DiversityVillager height, weight and hair colour varies randomly. Adds ten thousand new villager names and nicknames.160.8k downloads
- Living QuartersAdds living quarters to the Lord Manor, Tavern, Castle, and City Market.107.2k downloads
- Housing +Increases residential housing capacity and maximum job distance.98.8k downloads
- Trading PostLand-based trading system for exchanging bulk quantities of non-perishable items.98.2k downloads
- Storage +In times of plenty, prepare for scarcity. In times of scarcity, only the prepared shall thrive.95.9k downloads
- Balanced TradingAdds new resources to trading villages, balances prices, reduces trade volumes, and unlocks random trading partners at the beginning of the game.93.0k downloads
- Windows Decoration V4Adds windows and other items.77.0k downloads
- Basic MaterialsClay, thatch, shingles and tile are required for most buildings. Make and sell pottery.73.6k downloads
- Deforestation ToolsAllows the clearing of trees within your Territory with the click of a button.73.5k downloads
- Markets +Adds an extra slot (configurable) to all 9 of the markets stall types in the game.73.5k downloads
- AuthorityTerritory purchase and upkeep require you to establish your Authority by appointing officials and household staff.71.2k downloads
- Auto Accept New ImmigrantsAuto accepts new villagers/newcomers upon arrival at your village center.70.9k downloads
- Cider Brewery MonumentAdds a Cider Brewery Monument with apple orchard. It allows production of apples and cider. The apples can be sold at markets and the cider is tradable in taverns.69.5k downloads
- Corn FarmAdds a farm producing corn, and adds a corn grind function to the vanilla windmill.68.7k downloads
- Better FarmsAccelerates harvest rate, extends harvest season, and/or increases product storage of wheat farms, vegetable farms, hopfields, and vineyards68.6k downloads
- FlaxGrow flax on farms as an alternative raw material for producing cloth.67.0k downloads
- Patrols +Tweaks the patrols to be a bit more effecient.64.4k downloads
- Production Tweaks: CombinedTweaks wheat, flour, coal, cheese, gold bars, and more. See description for details.60.4k downloads
- Watchtowers +Modifies Watchtowers to have a 360 degree view with slightly increased range.52.9k downloads
- Production BoosterThis mod boost production in (almost) all of the resources to 10 per worker return to building, it also adds gem production to the mines.52.3k downloads
Browse all 148 Foundation mods Sortable by downloads, rating and date.
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Why Foundation mods break
A mod is compiled against one version of a game. When the game updates, anything that reached into the parts that moved stops working, and it usually stops working silently rather than with a message that explains itself.
That is what the table above counts. It is not a guess: each row is a mod the community has reported as broken by that specific release. The number is a fair measure of how disruptive an update was, and it is the reason people delay updating a game they have modded heavily.
Common questions
Does IndexGG host Foundation mods?
No, and it never will. Every download link points at the author's own page on Nexus, GitHub, CurseForge or wherever they published it. We index the ecosystem; the files stay with the people who made them.
Where does the compatibility data come from?
From the communities that maintain it in the open, not from guesswork. Each claim carries how it is known, so a reported breakage is never presented as though the author said it.
Why is a mod listed as broken when it works for me?
Compatibility depends on your exact game version and the rest of your load order. A mod marked as broken in one release may work fine on an older one, which is exactly why the version is recorded next to the claim rather than a bare yes or no.