The BioShock demo is probably eating up on your Live time since it came out. But if you're pretty much Big Daddy'd out already, you might want to avert your attention to something that's a little less freaky - unless of course you think that colored polygons and fast-swimming dolphins are freaky.

As promised last week, rolling out onto Xbox Live Arcade this Wednesday are Hexic 2 and Ecco the Dolphin.

Following down the rotating grids of Hexic HD comes Hexic 2. Carbonated Games' addictive puzzler is back with new challenges, special blocks, additional patterns, and a player-versus-player battle mode.

Meanwhile, the underwater city of Rapture isn't the only place for you to take a dive in. The classic Ecco the Dolphin returns from Sega, spruced up and starfished with online leaderboard support and "Best Time" records, while graphics and sounds have been enhanced.

Both titles come out this Wednesday, August 15, 9:00 GMT.