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(I have trouble posting links so just type "raptor" in the games wishlist and it should come up)

EDIT: here it is:
Post edited April 08, 2015 by Gengar78
Bit late but upvoted; This is an awful half-assed port

(Cheeky hijack - If you like shoot'em'ups, upvote jets'n'guns too!
Post edited August 26, 2016 by Cyker
I know its not gog...BUT, you can buy the dos version right from the 3D Realms website!