Mortar 0.3.1 · October 15, 2026

46 more games, and The Sims 4

BepInEx games from Thunderstore, The Sims 4 with its own Mods folder per profile, and games from the EA App.

What changed in 0.3.1

New

Games

  • 46 more games modded through BepInEx and Thunderstore, among them R.E.P.O., Risk of Rain 2, PEAK, Content Warning, Inscryption, Cult of the Lamb, Sun Haven and Enter the Gungeon; 14 of them also browse Nexus Mods
  • The Sims 4: each profile has its own Mods, saves and game options, Tray files go to the game's library, and mods come from CurseForge, Nexus Mods, GitHub, Patreon posts and itch.io pages
  • Games installed through the EA App are found and started
  • The Sims 4: Import from the game's Mods folder reads the mods already in Documents › Electronic Arts › The Sims 4 › Mods, at first set-up and from the Import menu, switched-off files included, and can move them out of that folder

Mods and browsing

  • Paste a Patreon post or an itch.io page in Add mod: it opens in your browser, and the file you save from it is offered and recorded under that page
  • Review the mods in the game's own Mods folder against a profile and bring them in
  • Typing in the mod list jumps to a mod the way Game select does: punctuation is ignored and digits count
  • Find on Nexus: mods imported from another manager or a folder with no page get their Nexus page and file back, from the Source grouping of the Mods list; Set Nexus page… in a mod's menu names the page by hand
  • CurseForge's Install button can open Mortar: turn on Handle CurseForge links in Settings › Downloads; links for games Mortar does not manage go back to the CurseForge app

Profiles and sharing

  • Merge one profile into another, as one step you can undo
  • Scheduled save backups, the run log, the console, conflicts and requirements can be set per profile
  • A profile can keep its own copy of the game's options file
  • Share › Mod list saves the list to a text file, and Multiplayer mod list loads a host's list from one

Launching and loaders

  • Play asks which graphics API to use for games that offer more than one, and asks again after a start that fails under another
  • The game's caches are cleared on the first start after a profile's mods change

Problems and diagnostics

  • Problems lists game settings your mods need switched on, and a Redundant finding can be dismissed and restored

Interface and settings

  • Game select is one alphabetical list with your recently played games on top, a letter rail to jump with, and typing a name finds it
  • The Windows installer offers to open Nexus and Thunderstore links with Mortar, and Mortar offers to take them back when another app claims them
  • Settings › About shows the build, and Open log folder finds the log
  • Join our Discord from the app menu, the Welcome screen and the site

Fixed (21)

Launching and loaders

  • Windows: SMAPI starts when Steam's launch options do not name it, a hidden SMAPI no longer hides the game window, Stop ends the whole game, and no console windows flash when Settings opens
  • A game set up from a folder you chose, or found through another launcher, starts directly instead of being handed to Steam, and on Linux a Windows-only game outside Steam or Bottles says why it cannot start

Mods and browsing

  • A Thunderstore update is found by the package's id, so a namesake cannot hide it, and other mod managers are left out of search and installs
  • The stored Thunderstore listing takes about a quarter of the disk space, loads twice as fast, and leaves memory after ten idle minutes
  • A space typed inside a mod's name no longer switches the focused mod off
  • A config file no mod owns opens alone instead of beside a second list
  • An itch.io key is accepted
  • A mod whose page is not known shows Unknown source instead of Nexus Mods
  • Installing an archive over a mod from a site keeps its page, picture and update checks instead of turning it into a plain Archive

Profiles and sharing

  • Windows: LAN sharing never listens on a network set to Public, and its firewall rules cover every network type so Windows does not prompt
  • Importing from Vortex reads mods it deployed as links
  • Multiplayer mod list: Check reads the text Share › Mod list makes, in all three formats
  • Share › Mod list names a mod once when several parts of one download share its name and version
  • Edit profile no longer scrolls sideways, and a long game list no longer widens the page

Downloads and updates

  • A second Install waits for the running download instead of failing
  • Changing mods no longer puts off the update check
  • A crafted archive or image can no longer make Mortar run out of memory
  • Review updates lists an update from another site that Mortar cannot download itself, instead of counting it and showing nothing
  • A CurseForge Install link for a mod whose author only allows downloads from its page is refused by name with what to do, instead of failing in the queue

Interface and settings

  • Closing the window quits when Mortar is not kept in the tray, and the tray's Quit works with the window closed
  • Tooltips, the reasons a control is off and an update's requirement changes are reachable by keyboard, and the sidebar is one tab stop walked with the arrow keys

Downloads and checksums for 0.3.1 · Every release