ActRaiser Recomp

PC port of ActRaiser

  • RecompilationPort Type
  • DerrickGoldDeveloper
  • 30 Oct 2026Page Updated
ActRaiser

Details

Developer
DerrickGold
Port Type
RecompilationA tool translated the game's original machine code into C automatically, which was then built as a native PC program.
AI Use
AI-assistedThe project says: “Multiple AI coding assistants have contributed to the tooling, runtime, debugging infrastructure, and documentation under my direction and review.” Source
Source Code
GitHub
Page Updated

Platform Support

ScreenshotsView All (6)

What you need: A ROM of ActRaiser (USA), 1 MiB with no copier header, dumped from your own cartridge.
SHA-1 of a correct dump:
e8365852cc20178d42c93cd188a7ae9af45369d7

Overview

Widescreen3D StagesCRT EffectsRebindable Controls

ActRaiser Recomp is a native port of ActRaiser for Windows, macOS and Linux, including the Steam Deck. The game’s 65816 code is converted to C and linked with a hand-written SDL3 runtime. The download is a Builder that holds the compiler and everything else it needs, and does this conversion on your own computer, offline.

Running as native code allows widescreen, layered 3D action stages, height-mapped towns and a 3D globe, GPU and CRT effects, replacement art and music, language packs with Japanese and European rule presets, and rebindable controls. The author says several AI coding assistants contributed to the tooling, runtime and documentation, under his direction and review.

All action routes have been completed end to end, while the simulation mode and some regions are still being tested. Releases are marked as pre-releases. The first run builds the game from your ROM and can take several minutes. The download contains no game data. It needs ActRaiser (USA), dumped from your own cartridge.

How to Set It Up

  1. Download the Builder for your system: the portable zip for Windows (x64 or ARM64) or macOS, the tarball for Linux (./run-build.sh), or the Steam Deck AppImage.
  2. Extract it into a writable folder and open the Builder.
  3. Give it your ROM. The Builder checks it, then compiles the game on your computer with its bundled tools, which can take several minutes the first time.
  4. Play from the Builder’s Workshop, where the settings menu explains each option.
Go to Downloads

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What's new in v0.805Pre-Release 0.805

Pre-Release v0805

This update adds atmosphere to Marahna and Aitos, enhances Death Heim’s original final-battle artwork in diorama mode, and reduces rendering and editor overhead. It also brings a bonus from our ongoing ActRaiser 2 work: its winged Master is now available to import and play in ActRaiser’s stages.

Audio

  • Fix duplicate or rapidly retriggered menu and dialogue blips at instant message speed when Extended sound channels is enabled, including menu confirmations and Yes/No selections. Slower message speeds retain their normal per-character sound.

Presentation and environments

Classic means the flat action renderer, including widescreen. Both modes means classic and diorama. Environmental effects are optional in either mode; the background-material enhancements below require diorama.

  • Both modes, with Environmental effects: Add Marahna Act 1 swamp atmosphere with canopy light, rolling mist and wakes, hanging vines, fireflies, jade wisps, moss and dew.
  • Both modes, with Environmental effects: Add Marahna Act 2 temple atmosphere with warm shrine torches, cool window light, dust, low wisps, wet ledges and drips. Lighting stays aligned across the connected gallery and sanctuary.
  • Both modes, with Environmental effects: Refine Aitos Act 1 lava bubbles, molten detail, warm light, waterfall spray and mist. Environmental recipes support US, Japanese and European terrain layouts.
  • Diorama, with Environmental effects: Refine Aitos’s distant storm and layered cloud lighting, with editable cloud openings, light shafts and background brightness.
  • Diorama, with Environmental effects: Enhance Death Heim’s original final-battle nebula with coloured glow, fighter illumination and sparse blue/magenta drifting dust. Preserve the original artwork, fight, sprites and timing; pause freezes the added motion. Enable Action 3D → Scene → Diorama 3D and Environmental effects. The normal effects switch controls this enhancement in the game and editor; the completion-scene option is independent.

Room-by-room diorama presentation work remains ongoing, including widening tile maps, refining background policies and skybox rendering, and adding unique environmental effects to more levels.

ActRaiser 2 and the winged Master

Work on ActRaiser 2 support is underway, including its action stages and world navigation. Full-game support remains in early development. In the meantime, you can use ActRaiser 2’s Master in ActRaiser’s stages, with gliding, diving and sword moves within ActRaiser 1’s action levels:

  1. In Workshop → Sights & sounds → Game imports, choose ActRaiser 2 / Master character.
  2. Select your own unmodified ActRaiser 2 (USA) ROM (.sfc or .smc) and press Extract & install.
  3. Restart your updated game and open System → Game. Enable ActRaiser 2 Master under Quality-of-life improvements. The setting starts off; you can switch characters during the same level.

Importing also adds ActRaiser 2 · above the clouds to the Workshop’s Scenery choices. ActRaiser 2 · Fillmore patrol becomes available when the Workshop also has the original ActRaiser scenery from your US build ROM. The scenes respect your atmosphere and reduced-motion preferences. See the Workshop import guide.

Rendering performance

  • Reduce repeated mist-lighting calculations and effect-resource preparation.
  • Diorama: Reduce sprite-capture clearing work and repeated lighting work for transparent sprite pixels.

Performance improvements depend on the device, graphics backend and scene.


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Windows (ARM64) v0.805 · Download
SHA-256 1b5f0b0f12aaf4b2fe7585c2a7b4a88fa58da9aeff6f79873775016246a6818b
Windows v0.805 · Download
SHA-256 3004e235eb9a9081ab07ae93b84c64e16c56ca7fe3ad29ada325cdaec1bb2b76
Linux (ARM64) v0.805 · Download
SHA-256 cea59f7803f9fd2aa3148c75c12a4794a4d1be7896108a28e14f5df6db16a5e0
Linux v0.805 · Download
SHA-256 d3d18c585ec5a6a1a825fc43d5c99f4eada80a1f68602f24b46728159c175cef
Steam Deck (AppImage) v0.805 · Download
SHA-256 2f87328f16b136d603560f90c62c44ddd41eb9eb88122411ecf7d5a35ad1881c
macOS (Apple silicon) v0.805 · Download
SHA-256 3e5d8096b7ad45455770288da904fedb9645163b050a4f0371001675c8571a82

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