Undead Legacy is RAM-hungry - 16+ GB for 8-16 players. - Get a Plan L server with Undead Legacy pre-installed (Plan M also carries the 1-click install, for groups up to 16) →
Version & compatibility (updated 10 September 2026): Undead Legacy has two live lines. The experimental line, currently UL 2.7.26 (2026.09.09), runs on game V2.6 b14 and ships as a two-part download, and both parts are required - this is the first modern-branch UL since 2022 and it updates every few days. The stable line is still UL 2.6.17 (2022.11.25), pinned to Alpha 20.7 b1, complete and unchanging. Pick a line, then pin the matching game branch in Steam, or the mod will not load. Official download: ul.subquake.com, by Subquake. See the 2026 Mod Status Tracker.
Undead Legacy is a comprehensive 7 Days to Die overhaul created by Subquake. It is not a mod you add to a vanilla save. It replaces the user interface, the way you carry things, the way you unlock recipes and the way you progress, and it has been in development since the Alpha 16 era.
Three changes define it. Every item and block has a weight, so your inventory is limited by what you can carry rather than by slots alone, with a 300-slot ceiling and proper sorting and search in inventory and storage. Perks no longer hand you schematics or raise your crafting tier; recipes come from a Research system instead. And Action Skills level from what you actually do, alongside overhauled attributes and perks.
Around that sit a rebuilt crafting and material progression, hundreds of new items, blocks, recipes and vehicles, a lockpicking minigame, player-crafted electrical lights with full RGB customization, and a more physical world: water sources need jars, fuel barrels and pumps need fuel cans, and many of the damaged vehicles lying around the map can be fully repaired rather than scrapped.
Note: this is what Undead Legacy ships today, taken from Subquake's own feature list. Two things people often expect are announced but not yet in the mod: the four-nutrient Food and Nutrition overhaul and world bosses are both still on the roadmap.
| Category | Features | Details |
|---|---|---|
| Encumbrance | Weight-based inventory | Every item and block has a weight; what you can carry is limited by that weight, with a 300-slot ceiling |
| Inventory & storage | Sorting and search | Advanced sorting and a search field in both your inventory and every storage container |
| Attributes & perks | Overhauled | Perks no longer unlock schematics and no longer raise crafting tiers, which is the biggest break from vanilla |
| Action Skills | Learn by doing | Skills level from what you actually do, rather than from spending points |
| Research | How you unlock recipes | The Research system replaces perk-gated schematics as the route to new recipes |
| Crafting | Rebuilt progression | Overhauled crafting system and material progression, plus hundreds of new items, blocks and recipes |
| Lockpicking | New minigame | Replaces the vanilla lockpick roll with a skill-based minigame |
| Vehicles | Repairable wrecks | Many damaged vehicles found in the world can be fully repaired; vehicles get a custom UI with speedometer and encumbrance |
| Electricity & lighting | Full RGB | Player-crafted electrical lights support full RGB colour customization |
| World interaction | More physical | Water sources need jars, fuel barrels and pumps need fuel cans, and wild or planted crops are picked with the action key |
| User interface | Overhauled throughout | Rebuilt journal with topic header images, 40 selectable map POI icons, and optional UL settings under Options > Video > User Interface |
This is the part that surprises returning vanilla players, so it is worth reading before you start a world. In Undead Legacy you do not buy your way to a recipe with perk points.
| System | What it does | Why it matters |
|---|---|---|
| Attributes and perks | Overhauled, and deliberately smaller in scope than vanilla | Perks no longer unlock new schematics, and they no longer level up your crafting tiers |
| Action Skills | Level up based on what you do | Swing a tool, fire a weapon, craft, and the matching skill rises on its own |
| Research | The route to new recipes | You research items to learn them, instead of waiting for a perk point or a lucky loot schematic |
| Lockpicking | A minigame | Locked containers become a skill check rather than a dice roll on your lockpick stack |
| Material progression | Rebuilt tiers | Working up through materials is the spine of the mod, and it is slower and more deliberate than vanilla |
The practical consequence: plan for a long game. Undead Legacy is paced for players who want the early tiers to mean something, which is also why it does not load into a vanilla save.
There are two live Undead Legacy lines and they are not interchangeable. Each one is pinned to a different 7 Days to Die branch, so this choice decides which game version you pin in Steam.
| UL 2.7.x (experimental) | UL 2.6.17 (stable) | |
|---|---|---|
| Game branch | V2.6 b14 | Alpha 20.7 b1 |
| Current build | 2.7.26, released 2026.09.09, with new builds every few days | 2.6.17, released 2022.11.25, unchanged since |
| Download | Two parts, and both parts are required | A single download |
| Saves | Can break between builds; treat a new build as a reason to expect a fresh world | Safe for a long campaign, because nothing moves under you |
| Pick it if | You want Undead Legacy on the modern game and can live with experimental | You want the finished, polished A20-era build and do not mind the old branch |
Whichever you pick, every player and the server must run the same line and the same build. A client one build ahead of the server is the single most common reason an Undead Legacy server refuses connections.
Important: Undead Legacy does not install into the Mods/ folder. Subquake's own instruction is to copy the files from the archive into the root folder of the game, not the Mods folder, because UL 2.7 ships a loader and runtime files that sit alongside the game executable. It also requires both client and server installs for multiplayer. Back up your saves first, and keep a separate copy of the game if you also play vanilla.
| Installation Method | Steps | Requirements | Notes |
|---|---|---|---|
| Manual Installation | 1. Download both parts of the archive 2. Copy the contents into the game's root folder, not Mods/3. Pin the matching game branch 4. Launch with EAC off |
Experimental UL 2.7.x runs on game V2.6 b14; stable UL 2.6.17 runs on Alpha 20.7 b1 | Get the current build from Subquake's official download page. Both parts are required |
| Mod Launcher | 1. Use 7D2D Mod Launcher 2. Select Undead Legacy 3. Click install |
Mod Launcher installed | Simplest method for beginners |
| Dedicated Server | 1. Copy the server archive into the server's root folder 2. Set EACEnabled to false in serverconfig.xml3. Restart the server |
Full file access, and every client on the same build | The archive carries BepInEx, Mods and the loader files, not just Mods/. Our M Plan includes 1-click setup |
| Modpack | 1. Use built-in modpack system 2. Automatic download & install |
Server with modpack support | Available on our hosting plans |
Undead Legacy itself is free. Download it from Subquake's official download page or through the 7D2D Mod Launcher. Because each UL line is pinned to one game branch - experimental UL 2.7.x to V2.6, stable UL 2.6.17 to Alpha 20.7 - version-matching is the whole job:
7DaysToDie.exe - not into Mods/. That is Subquake's own instruction, and it is the step most guides get wrong. UL 2.7 ships a loader that has to sit next to the executable. The 7D2D Mod Launcher handles this for you if you would rather not do it by hand.Keep a separate copy of the game. Because UL installs into the game root rather than Mods/, it will interfere with vanilla and with other overhauls in the same install. Use a second copy of 7 Days to Die if you want to switch back and forth.
For multiplayer the mod goes on the server and every client, all on the same line and the same build. The flow mirrors a vanilla dedicated server setup: SteamCMD-install the dedicated server, then pin it to the branch your UL line needs, then unpack the UL server archive into the server's root folder.
The server archive is more than a Mods/ folder, which is why a plain mod upload does not work:
BepInEx, Mods, doorstop_libs, doorstop_config.ini and run_bepinex_server.sh. Start the server with run_bepinex_server.sh, not the plain start script. Subquake also has you append <dllmap dll="dl" target="libdl.so.2"/> to 7DaysToDieServer_Data/MonoBleedingEdge/etc/mono/config.BepInEx, Mods, doorstop_config.ini and winhttp.dll.<property name="EACEnabled" value="false"/> in serverconfig.xml. UL cannot run with EasyAntiCheat on, which is also why UL servers are PC-only and not crossplay-capable.Prefer one-click? Managed Plan L hosting installs UL on the right branch, assembles the two-part experimental download, and keeps the loader files in place for you. Walkthrough video:
Does Undead Legacy work on V3.0, V3.1 or V3.2? No. Undead Legacy's newest line targets game V2.6, and the stable line is on Alpha 20.7, so neither runs on a 3.x build - not V3.0, not V3.1 "Henpocalypse", and not V3.2. Pin the game branch your UL line needs, which also means you cannot join a 3.x server while you do. Live status: the 2026 Mod Status Tracker.
Does Undead Legacy work on V2.6? Yes. Subquake's experimental line - currently UL 2.7.26 (2026.09.09) - runs on game V2.6 b14 and ships as a two-part download where both parts are required. It is genuinely experimental: builds land every few days and saves can break between them. The stable line, UL 2.6.17, remains on Alpha 20.7.
Where do the Undead Legacy files go, the Mods folder or the game folder? The game's root folder, the one holding 7DaysToDie.exe. Subquake's instruction is to copy the files from the archive into the root folder of the game, not the Mods folder, because UL ships a loader and runtime files that have to sit beside the executable. On a dedicated server the same applies: the archive carries BepInEx, Mods and the loader files, and you set EACEnabled to false in serverconfig.xml. Installing into Mods/ is the most common reason the mod appears to do nothing.
Is Undead Legacy dead? No, and it is no longer stuck either. Subquake shipped an experimental UL 2.7.x line for game V2.6 - the first modern-branch build since 2022 - and it is updating every few days. The complete, highly polished UL 2.6.17 on Alpha 20.7 is still there if you want a build that will not move under you.
Is Undead Legacy free? Yes. The mod itself is distributed free by Subquake through his official download page and the 7D2D Mod Launcher, so there is no reason to pay anyone for the files.
How do I install Undead Legacy? Back up your saves, pick a line, pin the matching game branch in Steam (V2.6 for experimental UL 2.7.x, A20.7 for stable UL 2.6.17), download both parts of the archive, copy the contents into the game's root folder rather than Mods/, launch with EAC off, and start a fresh world.
Can I play Undead Legacy with console (Xbox / PS5) friends? No. UL is a PC-only overhaul and disables EAC, so it is not crossplay-capable. Everyone must be on PC, on the same game branch, with the same build.
Explore More: Undead Legacy is made by Subquake, and his own pages are the authoritative source for builds, files and plans. The hosting links are ours.
| Resource | Description | Link |
|---|---|---|
| Undead Legacy Server Hosting | Specialized hosting for Undead Legacy mod servers | Undead Legacy Hosting |
| Official download (Subquake) | The authoritative source for every Undead Legacy build, current and legacy. Both parts of the 2.7.x archive live here | ul.subquake.com/download |
| Official server setup guide | Subquake's own dedicated-server file list and configuration notes for Windows and Linux | Server configuration |
| Official roadmap | What is shipped and what is still planned, including the nutrition overhaul and world bosses | Undead Legacy roadmap |
| Undead Legacy hosting details | Our managed Undead Legacy plans, supported lines and 1-click install | Undead Legacy Details |
| Compare Hosting Plans | Compare M, L, and XL server hosting plans | Compare Plans |
| Server Hosting Plans | View all available server hosting options | L Plan | XL Plan |
Looking for other mods? Browse all 7 Days to Die mods - Darkness Falls, Undead Legacy, Ravenhearst, plus 20+ quality-of-life modlets. Or grab them through the 7D2D Mod Launcher.