| Tennis no Ouji-sama - Doubles no Ouji-sama - Girls, Be Gracious! (Japan) | |
| Tennis no Ouji-sama - Driving Smash! - Side Genius (Japan) | |
| Tennis no Ouji-sama - Driving Smash! - Side King (Japan) | |
| Tennis no Ouji-sama - Motto Gakuensai no Ouji-sama - More Sweet Edition (Japan) | |
| Tennis no Ouji-sama 2005 - Crystal Drive (Japan) | |
| Tenohira Gakushuu - Chikyuu no Narabe Kata (Japan) | |
| Tenohira Gakushuu - Kikutan DS Advanced (Japan) | |
| Tenohira Gakushuu - Kikutan DS Basic (Japan) | |
| Tenohira Gakushuu - Zettai Onkan Training DS (Japan) | |
| Tetris DS (Europe) (En,Fr,De,Es,It) | |
| Tetris DS (Japan) | |
| Tetris DS (Korea) | |
| Tetris DS (USA) | |
| Tetris Party Deluxe (Europe) (En,Fr,De,Es,It) | |
| Tetris Party Deluxe (USA) (En,Fr,Es) | |
| Tetris Party Premium (Japan) | |
| Tetsudou Kentei DS (Japan) | |
| Tetsudou Musume DS - Terminal Memory (Japan) | |
| Tetsudou Seminar - JR Hen (Japan) | |
| Tetsudou Seminar - Oote Shitetsu Hen (Japan) | |
| Texas Hold 'em Poker DS (Europe) (En,Fr,De) | |
| Texas Hold 'em Poker DS (USA) | |
| Texas Hold 'em Poker Pack (Europe) | |
| Texas Hold 'em Poker Pack (USA) | |
| That's QT (Japan) | |
| That's So Raven - Psychic on the Scene (USA) | |
| Theme Park (Europe) (En,Ja,Fr,De,Es,It) | |
| Theme Park (USA) (En,Ja,Fr,De,Es,It) | |
| Theme Park DS (Japan) (En,Ja,Fr,De,Es,It) | |
| Theresia.. - Dear Emile (Japan) | |
| Theresia.. (USA) | |
| Theta (Japan) | |
| Think - Kids - Speel Je Slim! (Europe) (Fr,Nl) | |
| Think - Train Je Brein - Logica Trainer (Netherlands) | |
| Think - Train Je Brein - Ontwikkel Je Zintuigen (Europe) (Fr,Nl) | |
| Think - Train Your Brain - Logic Trainer (Europe) (En,Fr,De,Es,It,Sv,No,Da) (Rev 1) | |
| Think - Training fuer den Kopf - Fit fuer den Job! (Germany) | |
| Think - Training fuer den Kopf - Kids - Ist Doch Logisch! (Germany) | |
| Think - Training fuer den Kopf - Kids - Spiel Dich Schlau! (Europe) (En,De) | |
| Think - Training fuer den Kopf - Logik Trainer - Think Again (Germany) | |
| Think - Training fuer den Kopf - Logik Trainer (Germany) (En,De) | |
| Think - Training fuer den Kopf - Sinnes Trainer (Europe) (En,Fr,De,It) | |
| ThinkSmart - Power Up Your Brain! - Kids 8+ (USA) (Rev 1) | |
| ThinkSmart - Power Up Your Brain! (USA) (Rev 1) | |
| Thomas & Friends - Hero of the Rails (Europe) | |
| Thor - God of Thunder (Europe) (En,Fr,De,Es,It) | |
| Thor - God of Thunder (USA) (En,Fr,De,Es,It) | |
| Thrillville - Off the Rails (Europe) (En,Fr,De,Es,It) | |
| Thrillville - Off the Rails (USA) (En,Fr,Es) | |
| Tierbabys - Meine Grosse Tierpension (Germany) | |