Looking for a list of games that can actually use over 4mbs of RAM under normal operation. (Not counting stuff like mounting images with virtual drives)
What I've found in my own collection:
Thunder Blade
Street Fighter II'
Super Street Fighter II
I have 12mbs of RAM in my machine, and Super Street Fighter II is able to load the entire game (7 disks!) into RAM during initial bootup. So without a hard drive, it is possible to play the game with no disk swaps after the first bootup. Of course I use the HD install option normally, but there's something strangely cool about loading it all from floppy. :D
Mahou Daisakusen will recognize if you have 4 or 6mb ram, though im not sure what exact advantages it offers.
Probably just loads the whole thing into RAM with 6mbs. Like all the other games in this list so far.