A threedimensional labyrinth game by Jeff Minter / Llamasoft http://www.llamasoft.co.uk/. Might contain some machine-language routines, but the game is very slow anyway.
A card game. Contains some bugs. Use the cursor up and down keys to select the card to play and press RETURN. It won't let you play a card you just drew. It does incorporate the 2's and Jacks rules. It doesn't ask you what suit you want for a crazy eight.
Ultima: Escape from Mount Drash, whose loader was converted from tape to disk in 2002. This is not the original file, but it is more original than the single-file version below.
Ultima: Escape from Mount Drash by Keith Zabalaoui. Copyright 1983 Sierra On-Line, Inc. Ultima (tm) Lord British. The game uses some machine language subroutines.
Eliminate crocodiles (green and red things) by putting sticks in their mouths. This game is boosted by several machine language routines. Requires joystick.