The Little Mermaid II - Pinball Frenzy (Left Field Productions/Nintendo, 2000)
Pinball has never interested me, so take it with a grain of salt when I say that this one didn't either. It seems to be just two tables with some different play count and speed settings you can change.
Little Nicky (Digital Eclpise/Ubisoft, 2000)
It's apparently based on some movie. The cutscenes are like a really clunky version of a Lucas Arts adventure game and the platforming doesn't feel good at all, but it does at least have great music. Not a total failure, then.
Lode Runner: Domudomu Dan no Yabou (XING Entertainment, 2000)
You need to climb around the level to collect keys and you can doge the evil mafia guys by making holes in the floor for them to fall into. It's not really interesting enough to be its own game, but it does have music that sounds oddly similar to the cave track from Link's Awakening.
Lodoss Tou Senki: Eiyuu Kishiden GB (Tomy, 1998)
It's based on a series of fantasy novels that were in turn based on a rules-free RPG setting the author created. Naturally, then, this is a roll and move board game with minimal story. You can't say they were afraid to take creative liberty.
Logical (Conspiracy Entertainment/Sunsoft, 1999)
Colored balls appear up top on the left and bounce back and forth until you rotate one of the two wheels up top to give them a space to fall in to. If all four colors are the same, the balls on that wheel disappear and maybe something else happens. I couldn't figure out what the game wanted me to do to drop balls to the bottom, so once you get to the situation above it's basically softlocked. Another GBC reminder of the value of in-game tutorials.
Looney Tunes: Twouble! (Bit Managers/Infogrames, 1998)
A mix of 2D platformer levels where you chase Tweety and jump over various hazards and isometric puzzle levels where you have to find something to get back to chasing Tweety. It's an interesting mix of genres, but unfortunately it doesn't do either of them very well. Unlike a lot of these games, it does at least give you a huge amount of health instead of trying to pad its length with unfair difficulty.
Looney Tunes (Sunsoft, 1999)
Platformer starring Daffy Duck. You throw a weird frisbee thing for your attack, which is suspiciously similar to the attack in the Speedy Gonzalez game I talked about in the crappiest games I've ever finished list. It's similar to that game in a lot of ways, really, including having very loose controls that make it easy to accidentally slide off a platform. Still, the early levels at least seemed more fair than that game.
Looney Tunes Collector: Alert! (Infogrames, 2001)
It launched as Martian Alert in Europe and Martian Quest in Japan, both of which make much more sense for a game about stopping Marvin Martian from blowing up Earth. It's a top down action-y game where you can play as multiple characters and collect items, so there's some RPG and Zelda influences by the look of things. It also wants you to hop over a lot of barbed wire fences that seem to inevitably clip you because it's hard to get a good read on your jumps from this angle. Another one that's more interesting than good.