Tom and Jerry (Morning Star Multimedia/Majesco, 1999)
A boring standard platformer. The only thing remotely interesting about it is that I took this screenshot moments before the thing I'm standing on, which is apparently a manhole cover, suddenly shot up into the sky and killed me instantly. That makes you start the level over from the beginning, and is also terrible design.
Tom and Jerry: Mouse Hunt (Conspiracy Entertainment, 2000)
It's a race to collect 15 mice, but it's not really fair because there are way more hazards for Tom than Jerry and only Tom's mice can be removed from the goal. That makes sense thematically, sure, but it does not make for a fun game.
Tom and Jerry in Mouse Attacks! (Warthog/NewKidCo, 2000)
Another basic platformer, although this one at least has special items and doesn't OHKO you with floor traps. Unfortunately, the way you get special items is by winning a timed sliding block puzzle challenge while listening to painfully bad music.
Tomb Raider (Core Design/THQ, 2000)
I could talk about how this game's plot is historical nonsense and how it doesn't know the difference between "its" and "it's", but I'd rather focus on their decision to make Up jump instead of using B at all, and also to have three seconds of music at the start followed by only using sound effects. It feels horrible to play because jumping is so awkward, looks terrible, and doesn't sound like anything.
Tomb Raider - Curse of the Sword (Core Design/Activision, 2001)
They did at least manage to get through the intro without any typos or statements that made it clear they know nothing about their theme, but nothing else is any better. The music still cuts out after a few seconds and it still controls like garbage.
Tonic Trouble (RFX Interactive/Ubisoft, 2000)
I'd call this a Rayman ripoff, except that it's also from Ubisoft. It's apparently a remake of an N64/PC game they released the year before to mixed reviews, but it fared even worse. I don't think it's possible to get past these ducks without taking damage, because you can only barely jump higher than them once you're in the water and you certainly can't jump longer than they are.
Tonka Construction Site (Sunset Entertainment/TDK Mediactive, 2002)
You use heavy machinery to do construction tasks around construction sites. It's very basic, but it probably would've been fun for kids.
Tonka Raceway (Morning Star Multimedia/Hasbro Interactive, 1999)
A really zoomed-in MicroMachines-style racer. Unfortunately, the tracks are way too narrow for four racers, and everyone is constantly crashing into each other or hitting the walls instead of racing. They couldn't possibly have known what they were doing 22 years ago, but in 2021 it can also be seen as a great Ever Given simulator. If you manage to get yourself turned sideways, you jam up the entire track and no one can get by.
Tony Hawk's Pro Skater (Natsume/Activision, 2000)
The first GBC outing for Tony Hawk didn't have a career mode, so here's half pipe. I just mashed buttons and hoped they translated to a trick, because I didn't see any way of knowing what would work in advance. I'm sure that was in the instruction manual at the time, but an in-game explanation would've been nice.
Tony Hawk's Pro Skater 2 (Natsume/Activision, 2000)
The sequel does have a career mode, although it's presented in side-scrolling 2D instead of top down like you might expect. This perspective works in terms of keeping your combos going, but it obviously greatly limits what they can do with each level.
Tony Hawk's Pro Skater 3 (HotGen/Activision, 2001)
THPS3 got a new dev and what looks like a new perspective. I say "what looks like" because even though it looks isometric, I couldn't find any way to turn up or down and get off the starting 2D plane. It also doesn't have any music, which is kind of a big thing to leave out of a Tony Hawk game.
Toobin' (Digital Eclipse/Midway, 2000)
Another arcade port from Midway. My only past experience with this title was from one of their arcade collections on GCN, and relative to that this controls quite badly and looks terrible. It's very hard to make out what anything is meant to be and turning with the dpad just doesn't feel right.
Toonsylvania (RFX Interactive/Ubisoft, 2000)
This is the first licensed platformer based on a forgotten TV show in a while. It's fairly standard other than allowing you to punch enemies to death. Lethal attacks in platformers were surprisingly rare on GBC.
Tootuff (Planet Interactive/Infogrames, 2001)
Yet another game based on a French comic, but it does break the mold a little bit by being a roll-and-move game instead of a platformer. That wasn't a good decision, because these games are incredibly boring without the 4 player chaos of Mario Party's minigames, but it was at least not the usual decision.
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
Quest for Camelot
Return of the Ninja
Scooby Doo! Classic Creep Capers
SD Hiryuu no Ken EX
Shin Megami Tensei Devil Children: Aka no Shou
Space-Net: Cosmo Blue
Star Ocean: Blue Sphere