From MoSlo's website--very helpful information there, link:
Apogee
* Math Rescue (req:286)
* Word Rescue (req:8088/8086)
* Dark Ages (req:286)
* Monuments of Mars (req:8088/8086)
* Arctic Adventure (req:8088/8086)
* Pharaoh's Tomb (req:8088/8086)
* The Kroz Series
Blizzard Entertainment
* Warcraft II (req:486) -- issue:over-fast map scrolling
Interplay
* (from The Forgotten Realms Archives -- not sure which titles exactly)
* (from The Ultimate RPG Archives -- not sure which titles exactly)
* Lexi-Cross (req:8088/8086)
LucasArts
* Secret Weapons of the Luftwaffe (req:286)
* Their Finest Hour: The Battle of Britain (req:8088/8086)
* Star Wars: X-Wing (req:386) -- issue: missions 2 and 6
MicroProse (Spectrum HoloByte)
* X-COM: UFO Defense (req:386)
* Falcon 3.0 (req:286)
* Stunt Driver (req:286)
Origin
* Ultima I-V (req:8088/8086)
* later Ultima games? can someone confirm speed issues?
* Wing Commander I (req:286)
* Privateer 2: The Darkening (req:Pentium)
Sierra (DOS versions)
* Space Quest 1-4 (req:8088/8086) -- issue: character movement too fast
* Space Quest 5 (req:286) -- issue: character movement too fast
* Space Quest 6 (req:486) -- issue:'error 47'?
* Police Quest 1 (req:8088/8086) -- issue: lock-up at Bert's Park
* Police Quest 3 (req:8088/8086) -- issue: uncontrollably-fast car
* A-10 Tank Killer (req:8088/8086) -- issue:runway overruns during takeoff
* Red Baron (req:286) issue: 16-color too fast
BIG Thanks to MoSlo developers and users
i hope this isn't called 'stealing' information, but it's public, so...
(i rather be called an adsman for moslo--even though i've never tried it yet--rather than 'stealer' :p)
Anyway, my intention is just to put together a usable reference on this topic--since i'm trying to build a downclockable Pentium II system myself--so a resource like this is very helpful.
(requirements i listed here are for original DOS versions)
Additional Thanks to MobyGames