3DGE supports a wide array of data formats for the end-user. Below is a short list:
MODEL FORMATS
MD2 - Quake 2 Model format
MD3 - Quake 3:Arena Model format (3DGE only)
MD5 - DOOM 3 Model format (3DGE-only)
SOUNDS
OGG
WAV
MIDI
GRAPHICS
JPG
PNG
TGA
PATCH