Shadow tower (psx) What do I do with these files?

First of all I'd like to say I'm sorry if I'm asking a stupid question. This is my first time running an emulator. I believe I've setup ePSXe correctly, however I haven't actually tested it by running a game.Anyway, I downloaded Shadow Tower here and extracted the .rar I was given. When I checked the contents I found 3 files: a .ccd, .img and .sub. So what am I supposed to do with these files? I thought is was an .iso I needed to be able to play the game.

epsxe lets you play ISOs of games if they are in any of
these
formats > .BIN, .ISO, .IMG, .CUE, .CCD, .MDS.Since you have a .img file, you should load that file from epsxe menu.

Oh, I wasn't aware of that. I thought it needed to be an .iso. Thank you very much! Now I get to enjoy some good ol' nostalgia! ;D

:) Glad i could help.

Just adding onto this, an .img file and .iso file are basically the same.
So if it's one or the other, it should be read by whatever program you're using.