Some new Games & Tools for VIC-20

• Meteor Storm (an impossible mission)
• Weather 20 (Conversion of the classic Commodore PET game Ouranos (Weather War). Inspired by Orion70′s version for software emulated 40 column VIC-20, this is a genuine 22 column version.)
• Repel (A resurrected Space Invaders clone from a 1983 archive. Written in 100% machine code.)
  
• Island of Secrets (Conversion from Commodore 64 of a classic type-in text adventure from the book published by Usborne in 1984. Play it on your little colour computer!)

source: Denial (The Commodore VIC-20 forum)

source: Project 1541 III

Autopsy:

from Project Homepage:

The 1541-III is a PIC microcontroller controlling an FAT16 MMC/SD card with .D64 files. It is connected to a Commodore computer  via the standard IEC-bus (the serial bus normally used to connect diskdrives and printers).

The main goal of the circuit is to behave like a 1541 disk drive (therefore the name 1541-III). The MMC/SD card contains D64-files (or normal .PRG files).

source: Project 1541 III