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The cycle CPU backend is now the default. The former backend remains available through explicit source-build selection.
Preserves local two-to-four player co-op, adaptive widescreen, voxel views, character replacements and modern HD Mods. Corrected Captain Falcon, Pikachu and HD previews passed the owner playtest. Mario host and Luigi guest cycle online previews also passed. Focused rollback and LAN launch/return/rematch checks passed. WAN, separate-machine and macOS netplay qualification are outside these checks. Includes standard default-off Mods and a separate 16:9 widescreen preset.
Validation covers the recorded short owner playtests and focused automated checks. Full-game completion and new Linux/macOS runtime qualification are not claimed by this Windows release.
Game archives contain no ROM or personal save data. Select the matching original ROM at first launch. Legacy binary save states require the retained legacy backend; they do not load in cycle mode. Existing cartridge battery/password progress is preserved through the documented storage/import workflow.
Source default: master at c647c1c7966d375485ea1805d2dac31615fdcc1f.