Normally we'd just send out a tweet about this (that's usually what we do with free app deals, so if you're not one of the almost 40,000 people following us yet, you definitely should be), but this is a good one, and it's a holiday, so we wanted to make sure you knew. Sega is feeling particularly generous this weekend, so they're giving away free copies of their Columns Deluxe, a port of the old Genesis game, for the iPhone. The game is a pretty straightforward port -- it doesn't have any extras, and the accelerometer controls are a little tacked on from what we hear, but if you like the puzzler gameplay of Columns, and you should, it's a fun one to pull up for a few minutes at a time.

Plus, it's free -- from July 3rd to Monday, July 6th, Sega says it'll be on sale for the low price of nothing at all. Sounds good to us -- sit back, put a few brats and burgers on the grill, grab a Corona (and lime, of course), and enjoy some old-school dropping block gameplay for no money at all.

Gizmodo recently posted this video, which is beautiful to any PSX-era gamers: it's Final Fantasy VII running right on the iPhone, like buttah thanks to the 3GS hardware. How is this possible? Through the magic of emulation -- ever since computers got powerful enough to pretend to be other computers, people have resurrected old consoles and hardware by writing code that makes old games and software think its right at home in the computer it belongs in (an old NES system, a Genesis, or even a Playstation or Nintendo 64). As a result, by loading up ROMs into an emulator program, you can play old games you can't find (at least working) in the store any more.

But the problem, as it usually does, lies in the legality. Even though those games are hard to find, companies still often own the copyrights on them (Square, for example, just released FFVII in an official emulator on the PSP, and they wouldn't be very happy with someone else releasing it on the iPhone). So while it's very easy for someone to write software that pretends to be an old NES (and there are lots of jailbroken apps around that will do just that), it's not easy to get all the rights and legal sign-offs to make it legit. Legit enough for Apple to keep it in the App Store, anyway. And while the video Gizmodo shows is awesome, and is possible on a jailbroken phone, it's not likely we'll ever see that app make it through Apple's approval. Not to mention that even when people jump through the legal hoops, Apple isn't happy with running other systems' code on their hardware anyway. Lame.

That doesn't mean that the old games are gone forever -- there are certainly emulators of open-sourced or expired hardware on the App Store (here's one for Chip-8), and obviously there's a commercial reason for companies who do own the copyrights on popular games to bring them into the App Store officially. But as great as it would be to have a GBA emulator that automatically played any GBA game ROMs you loaded into it, that kind of stuff will have to stay in the jailbreak underground for now.

The GameTap lite client has been out on the Mac for a while, but GameTap just finally released a new version of their full player, and it is now fully compatible with the Mac.

Unfortunately, things aren't quite hunky dory just yet-- the Mac player will only play Mac-supported games, which leaves a large number of games completely out-- Sam and Max, Psychonauts, and any other games listed as "Windows" are N/A in the Mac player. However, any emulation titles are in, so Genesis, Neo Geo, and the old arcade games are all playable, according to GameTap's page-- you can get your Sonic on in OS X.

This still doesn't help us with new games, of course, but it is awesome to have a huge library like that now available for gaming on the Mac. The GameTap player is now available for download over on their homepage, and while many games are available for free, a Gold subscription to play all the games is $60 a year.