Well, I can't say for all games, but I have the 68k version of "Feeble Files" here, and it runs quite well. Also, there is support for both PowerUP and WarpUP. Lha works, and there is a MOS native version included. You will have to acquire installer from an existing source (Aminet, AminetCD, or any of the million other sources of Installer).

Congradulations on your purchase, and I hope the resources on this site will be of some help to you. Keep in mind that some of the listings (RAM for example) were explicitly for the Pegasos-I. If you have the capacity in some way,

I would suggest making a backup of your harddrives from your Amiga. In my opinion, this will give you the best start on your Pegasos. In fact, I have a complete "wb3.9" subdirectory on my MorphOS system partition, so I can move things over as I need them. (You'll soon be amazed at the amount of third party stuff that finds it's way to the harddrive!)