File Formats

File formats used across the filesystems of NSMBU and NSLU

File Format	Known Extensions	Magic Bytes	Description	Compatible Tools
ELF	.elf / .rpx	7F 45 4C 46	The entire game's code, compiled to be ran by the Wii U	Ghidra / IDA Pro / CEMU
SARC	.sarc / .bfma	53 41 52 43	Archive Format	Switch Toolbox
FRES	.bfres	46 52 45 53	Binary Wii U Model Format	Switch Toolbox
YAZ0	.szs / .yaz / .yaz0	59 61 7A 30	Compression Format	Switch Toolbox
FLAN	.bflan	46 4C 41 4E	Binary Wii U Layout Animation Format	Switch Toolbox
FLYT	.bflyt	46 4C 59 54	Binary Wii U Layout Format	Switch Toolbox
BFLIM	.bflim	-	Binary Wii U Layout Image Format	Switch Toolbox
GFX2	.gtx / .gsh	47 66 78 32	Image/Shader Format (?)	-
RPRH	.dat	52 50 52 48	Replay or Save Data	-
FFNT	.bffnt	46 46 4E 54	Binary Wii U Font Format	Switch Toolbox
MsgStdBn	.msbt	4D 73 67 53 74 64 42 6E	Text Archive Format	MSBT Editor / Kuriimu
MsgPrjBn	.msbp	4D 73 67 50 72 6A 42 6E	Text Data Format (?)	-
FWAV	.bfwav	46 57 41 56	Binary Wii U Wave Audio Format	Citric Composer
FSAR	.bfsar	46 53 41 52	Binary Wii U Sound Archive Format	Citric Composer
EXBIN	.exbin	00 00 0B B8 00 00 03 E8	(?)	-
PARAM	.param	-	(?)	-
SPBD	.ptcl	53 50 42 44	Particle Data Format	Switch Toolbox
BAHS	.sharcfb	42 41 48 53	(?)	-
ENVSET	.envset	30 2F 2F 3C	Plaintext Format	-
OPT	.opt	-	(?)	-
AAHS	.sharc	41 41 48 53	(?)	-
AAMP	.bagldof / .baglenv / .bagllmap	41 41 4D 50	(?)	-
CAMERA	.camera	-	(?)	-
BTSND	.btsnd	-	Boot Sound (?)	-
ARC	.arc	78 9C	Archive Format	Switch Toolbox
H.264	.h264	-	Advanced video compression format used for the Wii U app boot video. Not used on CEMU.	VLC Media Player
XML	.xml	(EF BB BF) 3C 3F 78 6D 6C	Markup Text Format for game metadata	Any text editor of your choice
BIN	.bin	-	Multiple Generic/Unknown Binary Data Formats	-