I have on my PSP:-
Kingodm Hearts: BBS
ZHP
These 2 games has been with me ever since I got my PSP(back in February) Both still not completed yet. Altough...my ZHP game IS progressing(for a while I was on chapter 2, now I'm on chapter 4)
This, of course, does not include the other games I kept switching in:-
Hexyz Force (not even close to finshing one side, and I still got another side to play as)
Star Wars: TFU(about 2 more levels and I'm done!)
Castlevania: Dracula X Chronicles (I've only recently beaten it last month, but not the boss rushes(okay, I've beaten normal) and 2 more bosses. Also, the SotN port...is giving me freezing errors)
On my laptop:-
X-Men Legends 2
Dow 2 Vanilla
STALKER: Shadow of Chernobyl
Star Wars: KoTOR
Half these games has been in my laptop for more than a year. Not finished yet.
On the DS(emulator):-
Pokeman Platinum(mostly because I've already finished Pearl)
Pokemon White(very close to finishing)
Magial Starsign (might be close to finishing)
Castlevania: OoE (to be honest, I've finished the game. This is my Lvl 50 Fresh Hard Mode game. I've tried at least a dozen times, but I'm still failing to medal-kill Albus)
GBA(emulator):-
Final Fantasy Tactics Advance
Pokemon Mystery Dungeon: RRT(the post-story dungeons, which are apparently related to the story)
FFVI Advance(since 2007...*hides*)
Sword of Mana(since 2009...)
Shining Soul 1 and 2
SNES (also emulator):-
Super Metroid(*runs*)
Chrono Trigger(*runs somemore*)
Megaman X3
I'm just losing mood to play certain games and thus have to wait a very LONG while before I continue on.