SNES Prototypes from Gigaleak (Stream)
These are all played on real hardware with a sd2snes.
List:
0:00:55 - Sleep
0:09:42 - Super Donkey 1
0:20:14 - Super Donkey 2
0:31:45 - Yoshi's Island
1:30:56 - Star Fox (Star Glider)
1:39:18 - Star Fox 2 (1994-08-31)
2:43:14 - Star Fox 2 (1995-01-24 Winter CES build modified)
3:51:05 - Super Castlevania IV