Two hot-looking, upcoming games, two bold art styles, one place you can play them both: San Francisco. This Friday, you'll be able to play Sega's tactical RPG Valkyria Chronicles at a Sony event at the Metreon PlayStation Store, with producer Ryutaro Nonaka in attendance. As for Street Fighter IV, GameSpot are hosting a tournament at CBS Interactive's HQ next Tuesday, with a few thousand bucks cash on offer for the winners. You'll find full details at the links below. GameSpot hosts Street Fighter Showdown [GameSpot] Go Hands-on with Valkyria Chronicles this week! [PlayStation.Blog]