Short: Problem with X-MasLemmings92, get Imploder from Fish disk 422.

The short description says it all.  If you are having problems getting
the X-MasLemmings92 demo to work because your computer says you need
explode.library, then you need to get a copy of "Imploder" off of Fish
disk 422.  If you are booting the demo directly, then you need to make
a "libs" directory on the disk and put explode.library into this directory.
Otherwise, put this in the "libs" directory of your hard drive.
This is an all-around useful utility for making executables smaller without
really slowing down execution time, so it's worth getting in any case.
Thanks to Peter Struijk and Albert J. Brouwer for Imploder!
Note:  Fish Disk 422 is available on nic.funet.fi, and other sites.