Default [Q] can't play final fantasy

i just flashed to viberom 1418 Qubex, but i cant play any ff games with this rom.
os not compatible? is there any solution or should i flash back my hh?

*noob question* titanium backup is for backing up apps so the next time i flash with other OS i dont have to DL my apps 1 by 1 right?
where does the backup stored? if i want to reset/erase my phone i need to backup the (titanium backup) data to PC?