I got it on release thanks to a fair share of family effort, my older sister used to get PSMagazines which where we've seen the release date, at the time we had deadly alliance and played the hell out of it.
When deception came, omg, we played a lot, the konquest, the stories, we were so hooked on the story, specially with the expansion of them realms, being in netherrealm for the second time since mythologies.
The modes, also puzzle kombat has to be one of the best modes NRS ever put in their titles.
Chess Kombat
the amount of lore and stages, that i think Armaggedon kinda felt short compared to what Deadly Alliance and Deception brought to the game.
It was also at this time (DA to Deception) that NRS music kinda peaked with a style so unique, there was an atmosphere to the chinese songs, the techno ones and the metal ones, that just hit the right spot
Last year i did a tribute to this era with a song, i'm pretty sure you guys recodnize immediately,, if you want to hear it:
https://soundcloud.com/eddy-wang%2Fkredits-mortal-kombat-deadly-alliance-remade-for-dan