Peggle is the tremendously addictive ball-bouncing game for the PC, ported to Xbox Live Arcade with 55 levels, 75 challenges, and multiplayer support via Xbox Live for 2-4 players. I am terrified to purchase it, since the last time I launched Peggle on Steam I disappeared for several days.

Crystal Defenders is Square's take on tower defense, using characters from the Final Fantasy Tactics series to defend your crystals against evil invading hordes of classic Final Fantasy monsters in more than 300 increasingly difficult stages.

Rounding up this week's Arcade releases is the second downloadable level for Twisted Pixel's The Maw, River Redirect, delivering a little more gameplay for a little more money.

Both Peggle and Crystal Defenders will run you 800 Microsoft points, with The Maw: River Redirect a steal at 160 points.

While the official title of this $7.99 iPhone game doesn't contain the words "Final Fantasy", Crystal Defenders is based on FF Tactics through and through, using job classes from the series as well as extensively using the A2's music throughout the menus and gameplay. It's basically a defense simulator, in which you place your units on the field and start the enemy waves, hoping you've built up enough forces to stem the tide.

There are three levels of play - W1 to W3 - each increasing in complexity. From what I've played of it so far it's an entertaining little title, but then anything that puts tiny black mages at my fingertips would have to work pretty hard to fail in my book. Check it out now at the iTunes Store. Thanks Fabian for pointing the game out!

スクウェア・エニックスがiPhone参入、2008年度今冬に『クリスタル・ディフェンダーズ』を配信予定 [Famitsu]