Finally, can anyone recommend some cool PCE CD platformers?
Unfortunately, the Turbo/PCE CD's platformer library is thin. The HuCard system has a decent little library of mostly NES-like platformers, but on CD platformers were few and far between. Here's the complete list of both platformers and related titles.
Note that unless noted, games released only in Japan.
TCD Platformers, Platform-Action games, and Run & Guns:
-Addams Family, The (US only release) - Very average Western platformer from Icom, based on the movie. You play as... the family's lawyer, of course, and have to explore the house looking for stuff and fighting enemies.
-Akumajou Dracula X: Chi no Rondo - Everyone knows this awesome classic. It has saving. Super CD game.
-Baby Jo: The Super Hero - Western computer game port by Loriciel. Average at best. I find it amusing despite its mediocrity. It has password save. Super CD game.
-Bakushou Yoshimoto Shingeki - Short and easy platformer from Hudson. It's moderately amusing (this game stars a real Japanese comedian), but the game itself is absurdly easy and bland. Super CD game.
-Bonanza Bros. - Solid port of the Sega game. Super CD game.
-Bonk 3: Bonk's Big Adventure CD (US only) - From Hudson. This is a good game, as usual from Bonk, but it's basically the HuCard but with CD audio.
Camp California (US only release) - Another average-at-best Western platformer from Icom. This game stars the Beach Boys kids' music group's bear mascot. It is better than the other Turbo game starring that bear, though, Yo'Bro for HuCard... Super CD game.
-Buster Bros. (aka Pomping World in Japan) - Single-screen shooter where you control guys on the ground. Two player co-op play is fun, but I think the series in general (it's also sometimes known as Pang) is only okay. This really is more single-screen shmup than it is platform-action.
-Chiki Chiki Boys - Port of the Capcom sidescrolling action-platformer. Fun but short and easy. No parallax, unlike the Genesis version. Super CD game.
-Doraemon Nobita No Dorabian Night - Fun platformer from Hudson. It's basically the same as the HuCard version except for some VERY minor upgrades, but it is a good game. Super CD game.
-Faussete Amour - Good but not great sidescrolling action/platformer from Naxat. You've got a nice grappling hook-like weapon. Pricey. Super CD game.
-Fiend Hunter - Japanese game that plays a lot like Prince of Persia. The long, unskippable cutscenes are annoying, but gameplay is good if you like this kind of game. I don't, all that much. It does have saving, though, which is nice. Super CD game.
-Hihou Densetsu: Chris no Bouken - This is an okay, if basic, platformer by Arc Co (now Arc System Works). Expect a simple little adventure with a slightly amusing story and you might have fun. I did a review of this game a while back.
-Horror Story - Sidescrolling run & gun. Looks like average stuff. It does have two player co-op, though. Super CD game.
-Iga Ninden Gaoh - Decent to good side-scrolling action-platformer. You play as a ninja. Some dislike this game, but I do think it's fun. It is tough, though. The game saves your progress after each level, which is nice. Super CD game.
-Jim Power - A solid port of the Amiga version of Loriciel's tough platform-action game Jim Power. If you want to try Jim Power but are intimidated by the insane challenge of the SNES game, this one's the one for you -- it's far easier, and has password save too! This isn't SNES Jim Power, it has the 5 Amiga levels and not the 7 SNES levels, and doesn't have parallax scrolling in the platformer levels at all, but I do like it. Great soundtrack, too.
-Juuouki (Altered Beast) - I haven't played this port, but it's supposed to be not great, not that Altered Beast is all that good anywhere. CD System Card 1.0 required.
-Mirai Shounen Conan (Future Boy Conan) - Telenet platformer based on the Miyazaki TV series. It's okay, but as always from Telenet could be better. It's obscure and might be worth a look, though. The game is short, easy, and has lots of unskippable cutscenes, but the graphics are good and the game is fun to play. It does save your progress, which is nice.
-Pop'n Magic - Single-screen platformer, sort of Bubble Bobble-inspired, but with an anime theme. Fun stuff, though it's not quite at Taito's level of quality. Super CD game.
-Prince of Persia (US/JP release) - Decent port of a classic I've never liked much on any format. Super CD game.
-Rainbow Islands - I haven't played it, but it looks like a solid port of this Taito sequel to Bubble Bobble, though NEC actually published this and not Taito. Super CD game.
-Shadow of the Beast (US/JP release) - A fine port of this Euro-platformer classic I've never played and might not want to, with how frustrating and mazelike it apparently is. Super CD game.
-Slime World (aka Todd's Adventures in Slime World) - TCD port of this exploration-heavy side-view shooter/platformer that we got in the US on Lynx and Genesis. The original Lynx version is probably the most popular. This is a solid version of an okay game, but it's one player only -- the Genesis one is two player splitscreen, and on Lynx you can play with even more via link cables. Super CD game.
-Strider Hiryu - Okay port of the Capcom classic with a level added but some downgrades -- there is no parallax and a low-ish framerate. Arcade Card required to play.
-Valis II (US/JP release) - The first game in the TCD's best-known, but deeply flawed, platformer series from Telenet. Telenet rarely released a game that didn't have significant issues, and this one has more than its sequels -- Valis II is the weakest of these four games.
-Valis III (US/JP release) - Better than part II. I like the three characters you can switch between. It's still annoying Valis divebombing-enemies irritation, though. It has saving.
-Valis IV - The TCD Valis game I've played the most. It's okay I guess but it's still Valis so I don't like it all that much. It does save your progress, still.
-Valis - The last and, by most accounts, best TCD Valis game is this remake of the original Valis. This is the only one of the four with no saving, though, and it's still a Valis game so it's probably annoying to play, but it is supposed to be improved over the others. Super CD game.
Partially:
-It Came from the Desert - This super-cheesy FMV/minigame title from Icom has some side-scrolling action segments where you shoot giant ants. (US only release)
-Monster Lair - Monster Lair is one part autoscrolling run & gun platform-action game, and one part shmup. I like this game a lot, it's really good! (US/JP release)
Sidescrolling beat 'em ups or action-platformers focused mostly on punching, not platforming:
-Browning - Mediocre at best sidescrolling giant robot action/beat 'em up game. Hard and frustrating, but I kind of like it anyway. The story is fully voiced in English, amusingly enough. Super CD game.
-Galaxy Keiji Gayvan - Don't know much about this one, but it looks okay. Super CD game.
-Genocide - Another average-looking side-view slash-'em-up with mecha. I don't have it. Super CD game.
-Kaizou Chounin Shubibinman 3: Ikai no Princess - Cool-looking and varied, but this side-scrolling action game (mostly about beating people up, though you can also shoot and there are a few short platforming segments) is absurdly short and easy. Expect no challenge here at all, but it's fun to play through anyway.
-Mad Stalker: Full Metal Force - And here's a third of them, yet another mech sideview slash-em-up game. Haven't tried this one. Arcade Card required.
-Ranma 1/2 - Sidescrolling beat 'em up slash fighting game based on the anime. If you like the first season of the Ranma anime this is well worth playing, even though the game is below average. It's fun for fans, as I am. Otherwise probably don't bother. It has password save. Super CD enhanced, but it'll play on regular CD too.
-Renny Blaster - I've heard this somewhat uncommon late release isn't great but haven't played it. Super CD game.
Sidescrolling action-RPGs are a strength on the system, and we got a bunch of them in English (US) too:
(Note, all of these games save to the system.)
-Auleria (Gensou Tairiku Auleria) - Taito sidescrolling action-RPG. May be okay? Haven't played it myself.
-Blood Gear - Good sidescrolling mecha action-RPG game by Westone, the Monster World people. Super CD game.
-The Dynastic Hero - Good game, aka Wonder Boy in Monster World on Genesis. The Genesis version is great, so this is surely good as well. US release is expensive. (US/JP release)
-Exile - Good game, and the better port versus the Genesis release.Super CD game. (US/JP release)
-Exile: Wicked Phenomenon - The second Exile game. It's good, probably, but nearly broken in the US thanks to Working Designs making the US version almost impossibly hard. Super CD game. (US/JP release)
-Popful Mail - NEC did this port of the original computer versions of this Falcom game better known for its US Sega CD release. The SCD version is probably better (this has much smaller ingame graphics than the nice SCD visuals), and is in English, but this is interesting too -- it's got that classic Ys ram-enemies-to-attack system, instead of a sword button like you get on SCD. Arcade CD enhanced Super CD game; with the ACD you get better cutscene visuals and less loading.
-Shape Shifter - Interesting but flawed Western-made game. This is sort of a Metroid-ish game in design, with a large open world to explore, but with difficult controls and limited lives, beating it is a test of patience and memorization. Super CD game. (US/JP release)
-Sorcerian - Solid port of the game, though the language barrier will be a problem if you want to play it. Sorcerian is okay but not great. Super CD game.
-Ys III - Good but short game, total grindfest. (US/JP release)
Partially:
-Legend of Xanadu - This game is mostly a topdown, Ys-sytle action-RPG, but it has side-view stages at the end of each act, cumulating in boss fights. This game is somewhat impenetrably confusing for the non Japanese speaker, so hopefully the translation path some people are working on comes to fruition! It looks like a fantastic game. Super CD game.
-Legend of Xanadu II - The sequel has beautiful graphics and is simpler and more approachable for non-Japanese speakers, but for this list, it's a downgrade -- this time only boss fights are side-view, there are no stages before them now. It's a must-play game for any genre fan, though. Super CD game.