Suikoden 3 starts off slow, but the plot is great and the trinity sight system is really cool.
My problem with Suik 3 was that I started with Geddoe instead of like, Chris or Johnathan Taylor Thomas. Which is comparable to only playing the Gus missions in SaGa Frontier 2. I definitely liked its battle system more than 1's, though. Also I remember the map being kind of controversial but I thought Suik 1's overworld was blaeghlaughaghl.
I need to get back to this when I quit being burnt out on RPGs.
Secret Agent - The videos made me think this was using the same engine as Commander Keen, except it's not. So the jump physics are kind of gross, as is the collision detection. Stiiiill it has a kind of level design I like.
Escape Goat - This seems nice but so far it also seems short and I've been getting through the puzzles just by... randomly pressing switches basically.
Steam Genesis Stuff - Played with Monster World 3 a bit. People on Steam are complaining about the sound quality in the emulator -- apparently it's Gens based -- but I'm not really noticing it. It's definitely better than what the old Smash Packs had, but the treble seems de-emphasized on it and it's a little mushy, maybe? Still, audio output on TVs varies a lot too so I'm not sure how you gauge the accuracy of the sound emulation, unless it's just egregiously malfunctioning like in that IREM thing.
That's apparently why some of the 3D Classics on the 3DS have equalizers in them -- the individual cabs would vary in how they sounded for a variety of reasons -- wear and tear, the acoustic properties of the room, slight manufacturing differences, etc -- so it's basically just a case of letting the user decide what sounds best.