Wow, so many things wrong there.
Do you have freeloader on your gp32. From www.entware.com or joygp or whatever?
GPengine is for turbographics games. Look up some info on www.gp32x.de or www.gp32emu.com for setting up your gamepark.
If you have freeloader and gpengine.fxe is in your gpmm folder on your gp32, and you have a folder gpmm/gpengine/ place turbographics games there.
Gloop is a gp32 straight game, no emulator needed, just freeloader. Not even that with the new gp32 bios I guess. Just unzip it on your pc (winzip). and copy the *.fxe file and stuff to gpmm/ on your gp32. If its a *.fpk, install it using your gplink program (check for newer version like 1.3.2 or so).
Good luck, post back here if you have more problems.
mth411