[Every week, we sum up sister iPhone site FingerGaming's top news and reviews for Apple's nascent -- and increasingly exciting -- portable games platform, as written by guest editor Danny Cowan.]

This week's notable items in the iPhone gaming space, as covered by FingerGaming, include the debuts of Equilibrio and 24 Special Ops and free demo releases for Zen Bound and Galaga Remix.

- Fishing Cactus Releases Equilibrio in App Store
"After a successful debut on WiiWare earlier this week, the Fishing Cactus-developed Equilibrio premiered today in the iTunes App Store. Equilibrio is a tilt-based action game in which the object is to guide a marble through a series of traps and challenges."

- Top Free Game App Downloads for the Week
"3D Brick Breaker Revolution and Tap Tap Revenge 2 remain top picks this week, though competition in the Mafia clone genre has increased significantly with the recent releases of iMafia New York and Undead LIVE!"

- Free App Roundup, April 4th - 10th Edition
"This week’s free releases include demo editions of Zen Bound and Galaga Remix, along with free full versions of EyeCue and Mafia Wars."

- E-Poll Research: iPhone Users Buy More Games Than Other Gamer Groups
"Organizers of the MI6 Games Marketing Conference revealed yesterday that iPhone users buy more games per year than owners of any other gaming platform. The findings were based on a survey conducted by E-Poll Research in February."

- Bulkypix's Hysteria Project Escapes to App Store
"Told entirely through first-person full-motion video, Hysteria Project's gameplay largely revolves around decision-making and quick-time events. With fast reflexes and good judgment, your character will escape from a killer's grasp."

- Tap Tap Revenge Downloaded by 32% of U.S. iPhone Users
"Global Internet sales analyst comScore has released a report naming February’s top iTunes App Store downloads. Topping the list is Tapulous’ rhythm game Tap Tap Revenge, which the company claims has been downloaded by 32 percent of all iPhone users in the United States."

- Top-Selling Paid Game Apps for the Week
"Flight Control stays on top for the second week in a row, edging out new competition from the tile-arranging puzzler ParkingLot. Wolfenstein 3D Classic drops out of the top ten after a promising third-place victory last week, leaving ZombieVille USA to take its place."

- 24 Special Ops Sneaks Tiny Jack Bauer Into Your iPhone
"In 24 Special Ops, players will hunt terrorists, crack security codes, and chase suspects down crowded highways in an original storyline that takes place in the 24 universe."