RetroBIOS

Source-verified BIOS and firmware packs for retrogaming platforms.

Quick start

1. Find your platform in the table below
2. Click Pack to download the ZIP
3. Extract to your emulator's BIOS directory

Platform	Extract to
RetroArch / Lakka	system/
Batocera	/userdata/bios/
Recalbox	/recalbox/share/bios/
RetroBat	bios/
RetroDECK	~/retrodeck/bios/
EmuDeck	Emulation/bios/

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Methodology

Documentation and metadata can drift from what emulators actually load at runtime. To keep packs accurate, each file here is checked against the emulator's source code.

The source code is the primary reference because it reflects actual behavior. Other sources remain useful but are verified against it:

1. Upstream emulator source - what the original project loads (Dolphin, PCSX2, Mednafen...)
2. Libretro core source - the RetroArch port, which may adapt paths or add files
3. .info declarations - metadata that platforms rely on, checked for accuracy

270 emulators profiled. Each profile documents what the code loads, what it validates, and where the port differs from the original.

6,733 files | 8 platforms | 270 emulator profiles | 4.9 GB total

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Platforms

	Platform	Coverage	Verified	Download
	Batocera	356/359 (99.2%)	354	Pack
	EmuDeck	161/161 (100.0%)	161	Pack
	Lakka	447/448 (99.8%)	439	Pack
	Recalbox	346/346 (100.0%)	341	Pack
	RetroArch	447/448 (99.8%)	439	Pack
	RetroBat	331/331 (100.0%)	330	Pack
	RetroDECK	2007/2007 (100.0%)	2001	Pack
	RetroPie	447/448 (99.8%)	439	Pack

Emulator profiles

Classification	Count
community_fork	101
official_port	59
frozen_snapshot	32
pure_libretro	29
game_engine	23
unclassified	12
enhanced_fork	12
launcher	1
embedded_hle	1

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Systems Emulators Cross-reference Gap Analysis Contributing

Generated on 2026-03-25T14:56:43Z.