Castlevania: Legacy of Darkness - Only works on Parallel core.Blast Corps - Some slowdown in menus, but playable.
Asteroids Hyper 64 - Only works on Parallel core.Soul Caliber - Some audio glitching, but playable.Mortal Kombat Gold - Studio intro and loading screen lag, but gameplay is flawless.Expendable - Studio intro and loading screen lag, but gameplay is flawless.Dux - Some vertical lines appear here and there, but plays great.Aqua GT - Some audio glitching, but playable.These are the games that you can and can't play right out of the box. To compile this list, I have tested these games on stock setting, as most RG315P users aren't looking to get to deep into the menus.
Feel free to contribute your lists and I can add them to the master. I figured it might be helpful to create a running list of the more demanding games that the RG351P can and can't play to help people along.