PlayStation Home keeps evolving. What started as a simple place to hang out and move furniture morphed into a land filled with game spaces, minigames, and much more. Now it's moving another step forward. The virtual space will get full-blown games, the first of which is Outso's Sodium One, an arcade-style shooter with massively multiplayer online and social gaming aspects all tied up into one.

　　Cost factors into any game, and Sodium One is no different. The first five levels will be offered for free, and the rest of the game (an added 45 levels) is available for $4.99. The game will feature rooms you can navigate: a bar, a dance floor, a mission area, a VIP lounge (available to those who purchased the game), and even some scorpion-stomping grounds, among other areas.

　　Sodium One has a few games built into it, some of which involve squishing scorpions and making virtual drinks. The core of the gameplay resides around Salt Shooter, where you're fighting off waves of enemy robots in the desert with a hovertank. You'll basically want to shoot down enemies, grab their loot, and run off to buy better weapons and upgrades for your ship.

　　You'll get missions from Vickie, an odd-looking robot with one goofy leg, blue hair, and a rather skimpy outfit. As you complete more missions, which might involve shooting robots, stomping on bugs, or going to various events, you'll level up your character, get patches for your avatar's outfit, and win upgrades.

　　Outso related that the game will be updated at regular intervals with new quests, added levels, and other various improvements. The developers will lean heavily on user feedback to determine which way to take the game. They indicated that cooperative modes might come in future iterations of the game.

　　As for the social gaming aspect, don't expect anything like Zynga's Mafia Wars, where you're constantly bombarded with invites, requests, and anything of that nature. As far as we can tell, you'll be allowed to purchase credits for upgrades and gift items to friends.

　　The game is accessible today via Home in North America and Europe and will be free for 1,050 users over the next seven days, at a rate of 105 users per day.

　　Sony's Director of PlayStation Home, Jack Buser, indicated that Sodium One marks the start of a shift in PlayStation Home. Expect a whole lot more in terms of full-blown gaming experiences over the next year.