Vinny Mainolfi provided this info on the fb group page regarding how to make your own multi-game disks. While I disagree with his assertion on not using a basic save state (it will work, if you run avenger or alleykat prior to making the save state), it's not worth harping on about. End-user can decide on this choice themselves:

From Vinny:

Something NEW regarding the Multi Disks… some people are getting the FILE NOT FOUND error when trying to load the disks? This is because they are using a GAME SAVE that already has the LOAD“*”,8,1 typed out. You can't do that. When loading a new Multi Disk, you've GOT to load AlleyKat from the built-in games, go back to the menu and select BASIC, then you've GOT to type LOAD“*”,8,1 for the first time that you use that disk. Don't use the lazy way of a GAME SAVE. Does that make sense?

Making your own C64Mini Multi Disks:

• Download FIBR from http://csdb.dk/release/?id=162390
  • (this is the small menu file that needs to go at the start of every disk you build)
• Download DIRMASTER from http://csdb.dk/release/?id=148169
• Install and run on your PC
• Select: Disk / New / D82
• Drag FIBR.PRG that you downloaded above, into the disk you have just started, so that it's ALWAYS the first file on your disk.
• Grab some .PRG game files from the Net and drag them into your newly created disk
• Save the disk on you DESKTOP
• Go to desktop and change file extension from .D82 to .D64
• Rename file to THEC64-drive8.D64
• Put file on USB Stick
• Plug into C64Mini
• Turn on C64Mini and load AlleyKat (or any other built in game)
  • GI NOTE: Not all games in the carousel activate the fastloader+d81/d82 support (read more about it here)
  • So to play it safe, select either Alleykat or Avenger.
• Press MENU button on joystick
• Open BASIC
• Type: LOAD“*”,8,1 and press ENTER / RETURN button
• Type: RUN and press ENTER / RETURN button
• Use joystick to select a game and press FIRE to load

Check out http://www.FREEZE64.co.uk for C64 fanzine and content :)

Paul provided a walkthrough video on how to create multi-game disks. More info here:

• https://www.facebook.com/groups/209280506324242/permalink/241797509739208/
• https://www.youtube.com/watch?v=7N1HKLMnMEk

A few people have made mention of the multi-game menu system tools they use to prepare such disks. I've compiled a list of the ones mentioned so far:

• FIBR
• Turbo Menu Maker
• NAV