Mario's Game Gallery aka Mario's FUNdamentals (Classic Mac, Presage, 1995)
You can play it in your browser here.
Featuring voice acting from some guy named Charles Martinet. It's an unorthodox take on the character, but I like it.
War of Flowers (Classic Mac, Minho Choi, 1993-1995)
A hanafuda card game. You can play it in your browser here.
Screenshot from Macintosh Garden.
1995Card aka Flower Card v6.3a - unregistered version (DOS, Ninano Soft, ~1994-1995)
You can play it in your browser here.
The Solitaire Graphical Game Maker and Player (SOLO) v2.10 (Windows, Dan Reed/Bad Elf Software, 2000)
Several dozen free solitaire games - and if that's not enough, just use the editor to add even more! Still works on modern versions of Windows. You can download it here.
Tip: you can run the help files in this in-browser tool.