Let's Play Every Game Boy Color Game, Part 55
Pop'n Music GB (Konami, 2000)
A Beatmania-style game that seems well-designed in every way except the controls, which are unfortunately very important for a rhythm game. Left/Up/Right(or start)/B/A is just not intuitive, and it's a mess to keep track of when you have a lot of notes on screen.
Pop'n Music GB - Animation Melody (Konami, 2000)
Everything from before is still true, but now the music is more complicated, so the issues are even more obvious. I also have no idea what the character on the right is meant to be.
Pop'n Music GB - Disney Melody (Konami, 2000)
This actually has the easiest music of the bunch, but I still wouldn't recommend playing it because they've overlayed some really horrible noises for when you hit a note.
Pop'n Pop (ITL/Jorudan, 2001)
A port of a Taito arcade game about trying to match these balloons in groups of four. The clouds move right to left and then down in a space invaders pattern, but you can occasionally get powerups that push the cloud back up a few rows. I think you need to get a full clear to advance to the next level, but I was stuck with only red balloons spawning when I needed yellows.
Portal Runner (Handheld Games/3DO, 2001)
A game that Wikipedia describes as "infamous" for releasing on 9/11, but 3DO attracted even more controversy by demanding that GamePro write reviews to make their advertisers happy and saying they'd pull ads as a result of the unfavorable coverage this game got. But it deserved that, because even though this game has surprisingly good music, the gameplay is a disaster. It's poorly animated platforming mixed with a bow and arrow attack that never auto-aims at what you want.
Power Pro Kun Pocket (Diamond Head/Konami, 1999)
A spinoff of the Powerful Pro Baseball series that turns it into more of an RPG/VN. I'm very interested in the idea, but it uses a font that's not pleasant to read in a lot of text boxes, so I think I'll take a look at a game on another system.
Power Pro Kun Pocket 2 (Diamond Head/Konami, 2000)
This is the sequel. It has the same RPG/VN mode as above, but I decided to check out the regular baseball mode instead, which has one of the strangest pitching interfaces I've ever seen. I don't think I really like it, and I definitely don't like that fielding plays itself.
Power Quest (Japan System Supply/Sunsoft, 1998)
Kids everywhere have gotten into "modelling", which is making customizable radio-controlled robots fight each other. In practice, that means it's a 1v1 fighter with (I assume) customizable characters. It's probably not a very good game and I don't expect to finish, but I'm throwing it on the list just to see how they handle changing out moves and whatnot.
The Powerpuff Girls: Bad Mojo Jojo (Sennari Interactive/Bam! Entertainment, 2000)
This game is dire. You move so quickly and with so much camera intertia that it almost triggers motion sickness despite being a 2D side scroller. The music is horrible, the graphics are indistinct, and your special attacks don't even work most of the time. I hope you like the look of that enemy above, because there aren't any others in what I played. But it's okay if you don't, because you can just zoom past them with no obvious consequences. This is a real contender for the worst game on GBC.
The Powerpuff Girls: Battle Him (Sennari Interactive/Bam! Entertainment, 2001)
Or, at least, the last game would be a contender for worst game on GBC if this one hadn't come along and introduced instant-death pools of purple goop that are in a "bonsai garden" for some reason, and also a Flappy Bird-esque flight mechanic. It does at least fix your special attack so that it triggers reliably, but it still doesn't have any noticeable effect on enemies.
Golf Ou: The King of Golf
John Romero's Daikatana
Kakurenbou Battle Monster Tactics
Keitai Denju Telefang
The Legend of Zelda: Link's Awakening DX
The Legend of Zelda: Oracle of Ages
The Legend of Zelda: Oracle of Seasons
LEGO Island 2: The Brickster's Revenge
Metal Gear Solid
Millennium Winter Sports
Pokemon Crystal Version
Pokemon Card GB2 - GR Dan Sanjou!
Pokemon Puzzle Challenge
Pokemon Trading Card Game