The phrase "OUYA launch game" kinda weirds me out. That is like calling Guild Wars II a launch game for the PC I'm building right now. A lot of casual observers and even veteran journalists still don't seem to understand what the OUYA is. Everyone's trying to fit this new piece of hardware into an old paradigm that just doesn't work.
My PC analogy doesn't really work either. The OUYA isn't like a Windows beige box, but it also isn't like an indie-only version of an Xbox 360. It's a Kindle Fire.
The Kindle Fire is Amazon's 7-inch Android tablet. The device runs a modified version of the Google operating system that only allows access to Amazon's Appstore.
OUYA is doing something very similar. Both machines run on modified versions of the Android OS. Both have their proprietary app marketplace. Both are inexpensive compared to competing products.
Only unlike the Fire, the OUYA probably won't close off access to other app stores. That's what the company means when it says its console will be "open."
On most Android devices, installing a separate program is just about as easy as installing a .exe file on Windows. That's the only way that you can currently install the Amazon Appstore on non-Amazon devices. Google isn't going to host a competitor market in the Play store, but it won't stop you from installing it if that's what you really want.
Amazon took Android and closed it down. OUYA brags that it'll do the opposite.
If that's true, then nothing should prevent OUYA owners from downloading every game on the Play store on day one with the system. Sure, the majority of those games aren't optimized to work with a physical controller, but quite a few are. A while back, Sony released its PlayStation-branded Xperia Play, which featured a slide-out controller. A handful of high-profile games support that phone despite it not being a huge success.
If a game supports the Xperia Play (or a bluetooth controller), then it will very likely support the OUYA game pad.
Minecraft: Pocket Edition supports the Xperia Play. The next time someone tries to say that the OUYA doesn't have Minecraft, simply smile and let them know that you'll be playing it on day one. Minecraft may not be on the OUYA-branded market, but "open and hackable" means that doesn't matter.
Left 4 Dead 2 isn't on the Games For Windows Live marketplace, but that doesn't mean you can't play it on your Windows machine. That's crazy, and yet that is what people are suggesting here. It shows a fundamental misunderstanding of this product.
So the OUYA is built like a Kindle Fire that operates on the principles of a PC with a console controller and a smartphone app store. Where does something like that fit in?
If it's successful, then it will be recognized forever as the next phase of dedicated gaming. If it's a failure, then it will be forgotten as a missing link in the medium's evolutionary path. Either way, it's one step ahead of everything else.