Loader architecture

The parts of DeltaLoader and how they fit together.

Mods siteAPI, catalog

verified download

DeltaLauncherinstalls, switches, starts

starts it

Injectorswinject.exe

loads into the game

stormworks64.exe

swversion.dllshows the DeltaLoader label

your_mod.dllSW_MOD, sw_mod_start(), hooks

Part	Role
Mods site / API	Catalog and downloads (a Modrinth-shaped API).
DeltaLauncher	Installs, verifies, switches mods, starts the game, lays out overlays.
Injector	Checks the target and loads DLLs into the running game.
Version patch	Built into the launcher; shows the DeltaLoader label and is loaded into the game before the mods.
Bridge (SDK)	In every mod DLL: connects to the game, checks it, installs hooks.
Mapping	Names, addresses, signatures and layouts. The source of everything the bridge knows.

Principles#

Fail closed. SHA-256 of the executable and all byte signatures must match, or nothing is delivered.
No permanent changes. The game's files are not modified. Overlays are journalled and restored.
No anti-cheat. The loader refuses to attach when an anti-cheat module is present.