The VG Resource

Hello! I used to play a game called Bots!! as a kid. It's since been purchased and renamed to Bout Cheetah. The servers are still online and you can log in and play. It's just dead with 1 or two players online sadly. I really want to get the models from the game and redesign them and 3d print some of the characters. The game is small and I can easily view all of the GUI objects, sounds, music, and other elements. I found some OBJ files but for some reason when I try to open them in Blender it doesn't actually import anything. I'm new to ripping models and not even sure what engine this old game runs on. Is anyone able to help me get the models?

Thanks so much!