I looked on my Japanese PSN account to see if maybe they already had the Mortal Kombat demo, but I was greeted with something much more ridiculous.
Theres a demo up for Yakuza Of The End ((Yakuza 5)). It's the final Yakuza game in the Kazuma Kyuri/ Tojo clan arc of games. I've been waiting to play this game for about a year now, because it's a Zombie Apocalypse game. Sega Japan has actually gone on record in say "This is NOT a side story. Were sending the Tojo Clan story arc off with a bang."
 
Anyways it plays basically just like dead space. It's a third person shooter, you can shoot and walk at the same time all that jazz. 
The amazing part about the game is that it's in the Yakuza universe.  There is host clubs, Club Segas, minigames, beating dudes up, leveling up, and side quests.
Just in this game instead of stomping on a dudes face for a heat action, you throw several frag grenade into a crowd of zombies and shoot them in mid air. Here's what it comes down to. Your going to need the strength of 70 lemons to fight the undead hordes. So stop by your local shop, pick up a copy of TVBROS magazine and a nice C.C. Lemon.