Well it's not simple per-se, but I mean compared to a lot of other formats I've seen 
Anyway, turns out it was. Here's a QuickBMS script:
The things you want should be ready to use in .png, .jpg, and .ogg format. Things like .lvl, .fnt, .spr, .dmo, and .sav probably aren't useful unless you want to try modding the game. There's also strings.bin which appears to hold all the text, again it isn't really useful if you're just extracting resources.
Anyway, turns out it was. Here's a QuickBMS script:
Code:
# Beetle Bug .stg
#
# Written by puggsoy
# script for QuickBMS http://quickbms.aluigi.org
idstring "stg2"
getdstring DUMMY 0x0e
get INFSTART long
get FILES long
goto INFSTART
for i = 0 < FILES
get NMSZ short #not necessary but whatever
get DUMMY long
get ZERO byte
get SIZE long
get OFFSET long
getdstring NAME 0x1D
log NAME OFFSET SIZE
next iThe things you want should be ready to use in .png, .jpg, and .ogg format. Things like .lvl, .fnt, .spr, .dmo, and .sav probably aren't useful unless you want to try modding the game. There's also strings.bin which appears to hold all the text, again it isn't really useful if you're just extracting resources.