These are the games *Deep Breath*
Ace Attorney Series (no matter what i do, until a case is over i never put it down!)
Pokemon HG/SS (truly the best pokemon games to date. wonder how the 5th gen will fare...also platinum was good)
Bejeweled Twist (SERIOUSLY... I cannot put this down.....Most addictive puzzle game ever... level 90 on zen mode, Nuff said about addicting...)
Kingdom Hearts 358/2 Days (A Portable Kingdom Hearts game to play anywhere and at anytime, I cannot wait for Birth By Sleep for the PSP)
Sonic Rush and Sonic Rush Adventure (As someone said, this game and time trials, they never get boring)
Sonic and Sega All-Stars Racing (Very fun to play, beat all the tracks and most of the missions in one-sitting, really fun.)
Mario and Luigi Partners in Time and Bowsers Inside Story (definately played Inside Story more as more to do and one bonus character- Bowser, very fun to play)
CrossWords DS (The wordsearches in that game, i did about 45 of those buggers in one-sitting....
)
Mario Kart DS (The best mario kart could be on a portable! Online is fun, Wireless is mega-fun, all round, very fun to play)
Mario Party DS (The party never stops, it is so fun to play with mates who dont own the game and just have to go on download play, really fun)
The World Ends With You (Until Kingdom Hearts 358/2 days came out this was my all-time favourite RPG on DS, and even after Kingdom Hearts 358/2 days released... it still is my favourite!)
So there you have it. I have a fair few games i find fun, addicting and challenging.
~Giratina3~
P.S. Can someone please remove my warnings.... i have had them for nearly a year now.... and have learned my lesson.
Golden Rule of GBATEMP- Never give or request rom links.
Im sorry to have broken these rules, and promise to abide by these rules from now on.