With Filestar you get 0 different skills for working productively with TERF Game Archive (.dat) files.
About .Dat
Name
TERF Game Archive
Extension
.dat
Format
Binary
Category
Game
Description
A Two Tribes game resource archive (Toki Tori 2+, RIVE): the TERF magic, small version fields and zero padding, then a sparse 64-bit directory of packed game resources. Filestar recognises it; extraction is not available yet.