STS2 Mod Manager
Built around playing your friends' modpacks. Share by code
(jess/AA5A-315D-61AE) or one-click link
(sts2mm://import/...) — or browse public modpacks
other players have shared, right from inside the app. Manage profiles,
audit versions, auto-backup before launch. Cross-platform for
Windows, macOS, and Linux. No account, no tracking, MIT-licensed.
Download latest release → View on GitHub
Why this one
This one has a social focus — built around sharing modpacks and playing the same builds as your friends. A few choices follow from that.
Code or one-click link
Friend pastes you jess/AA5A-315D-61AE, or clicks sts2mm://import/jess/AA5A-315D-61AE. Either way the app installs the pack — bundled mods and GitHub releases pull automatically; Nexus-only mods that weren't bundled surface as pending. Re-shares reuse the same code so followers see "update available" instead of having to follow a new code.
Browse public modpacks in-app
A dedicated Browse Modpacks tab lists every pack people have opted into sharing publicly. One click installs any pack with the same smart-import flow as paste-a-code, with live download progress showing which mod is pulling and how far through the pack you are. Your own packs default to Friends-only — flip Visibility on the Publish dialog when you want to list one.
Smart import routing
Click a share link and the app figures out what to do: new pack → confirm + install; pack you already have → "switch to it?"; update pending → "apply update?"; already on the latest → friendly "you're up to date" toast. Same logic whether you paste the code or click the link.
Game-version aware Repair
If a mod's latest release needs a newer game build than yours, Repair walks back through the mod's release history and installs the newest version that's actually compatible with your Slay the Spire 2 — instead of installing something the game's loader will silently skip.
Drift detection
When your installed mods diverge from the active profile (you toggled something, an update reshaped a mod), the app flags it with a one-click Repair that re-applies the manifest. No more wondering why a profile feels different than last session.
Pin = version and state
Most managers pin only the version. This one pins both the version and the on/off state, so a modpack update from a curator can't auto-toggle a mod you specifically wanted on or off.
Audit you can act on
Settings → Audit shows every mod with a colored LED for its real state: up to date, update available, won't load on your game, release missing assets, no source linked. Update / Pin / Repair actions live on the row.
No account, no telemetry
Open source, MIT-licensed, ships as a standalone Tauri app. Your mod sources are GitHub releases and (optionally, with a free key) Nexus. Nothing leaves the app except the network calls you'd make yourself.
Manage mods
Toggle, pin, repair, audit. Advanced toggle on each screen unlocks the deeper controls when you want them.
Share, follow & discover modpacks
Share what you play. Subscribe to friends' packs and get an "update available" card when they re-share. Or browse public packs other players have listed — no friend code needed.
A note on Nexus. Free-tier only.
The app opens the mod's Files page in your browser; you click
Nexus's Slow Download / Manual button (the free one),
wait the few seconds, and the browser drops a zip into
~/Downloads. The app's folder watcher picks it up and
installs automatically. Don't click Nexus's Mod Manager
Download — its nxm:// deep-link isn't wired
through to the install pipeline yet, so nothing happens. Premium
accounts use the same free-tier flow, so paid subscribers don't get
faster downloads here.
Quick start
- Download the installer for your platform (Windows .msi, macOS .dmg, Linux .deb / .rpm / .AppImage).
- Run it. The first-launch wizard auto-detects your Slay the Spire 2 install via Steam — and remembers a manually picked folder across restarts if you launch the game directly.
- Got a code? Paste it on Home and hit Add Pack. Bundled and GitHub-sourced mods install automatically; Nexus-only mods that weren't bundled show as pending so you know what to grab from Nexus.
- Got a link? Click
sts2mm://import/...and the app does the rest — install, switch, or apply pending update depending on what you already have. - No code? Open Browse Modpacks in the sidebar and one-click install any public pack — live progress shows which mod is downloading.
- Hit Launch. Auto-backup runs first.
Source & bug reports
- Source code on GitHub — MIT licensed.
- Report a bug — the in-app Home → Generate support bundle button helps.
- All releases — including pre-release builds.