Ultimate ASI Loader review
A focused, free loader for low-level ASI plugin support on Windows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Ultimate ASI Loader is an open-source proxy DLL for loading custom ASI plugin libraries into Windows game processes. It is aimed at users working with plugin-based mod setups for GTA San Andreas and Resident Evil 5, with support for both Win32 and Win64 environments. The loader is typically placed in a game directory under a proxy name such as dinput8.dll, while ASI files can be stored in the game root, scripts, plugins, or update folders.
Its strongest area is low-level loading flexibility. Ultimate ASI Loader supports multiple proxy DLL names, forwards calls to renamed original DLLs, and can override files from an update folder. Configurable total-conversion folders add another way to organize game modifications. The package also generates logs and crash minidumps, which gives users diagnostic information when plugin-based changes cause problems. Optional D3D8-to-D3D9 conversion support and a legacy windowed-mode feature for x86 builds extend its utility for compatible setups.
The trade-off is focus rather than broad mod-management coverage. The published category specifications show Windows support only, with supported games listed as GTA San Andreas and Resident Evil 5. There is no load-order control, profile support, or dependency management, so it is not designed to coordinate complex mod collections through a graphical management layer. Choose Ultimate ASI Loader when direct ASI plugin loading, DLL forwarding, folder overrides, and diagnostic output are the priority. Choose a different type of mod loader when you need wider game coverage or built-in organization for load order, profiles, and dependencies.
Ultimate ASI Loader pros and cons
- Where it wins
- Loads ASI plugins from several game folders
- Supports Win32, Win64, proxy DLLs, and DLL forwarding
- Includes logs, crash dumps, overrides, and conversion support
- Where it doesn't
- Windows-only platform coverage
- Supported game coverage is limited to GTA San Andreas and Resident Evil 5
- No load-order, profile, or dependency management
Ultimate ASI Loader fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update