Yeah, I remember I was the same when I first saw it, I didn't even realise it was Mortal Kombat at first. I came into the arcade and there was a massive crowd around this new machine, and I caught glimpses of the game through the crowd and it looked amazing. Saw someone do Jax's arm rip fatality and I was like hang on, only one other game I know has violent finishing moves like that, OMG ITS A NEW MORTAL KOMBAT and I was hooked
I think it was also really awesome because that was back in the days when the net was in its absolute infancy, the web didn't even really exist at that point, so a lot of the stuff in the game was genuinely secret and you had to discover it yourself or find out about it by word of mouth, etc. I remember going on bulletin boards with my super fast 2400 baud modem (yep, showing my age now) to try and find out moves and fatalities and info and stuff and just discuss the game with other people.
I mean, nothing compares to the first time I was beaten by a Jax player, expecting to get my arms ripped off or my head smashed, and instead he cuts out little paper men and smiles at me and does a Friendship. I was like WHAT THE HELL WAS THAT?!?! And it just totally blew me away because you didn't even know the capability to do that was in the game.
And all the rumours and like urban legends that would exist around the game, like at the start it seemed every person you talked to had a different way to get to fight smoke (or reptile in MK1). Remember all the stories of stuff like "When the UFO flies over the moon on the pit stage you have to land an uppercut at this exact position", etc, etc. And characters like Noob Saibot and Ermac only exist because of the wild rumours and stories that people invented, that so many people believed they became like legend. That sort of stuff just would never happen anymore because it would be debunked so easily and so readily over the net, and all the correct info is available to anyone who wants it immediately with a quick google search.
Kinda miss those old days, there was a real sense of mystery and discovery and something almost magical about it.