NVIDIA has continued the trend today, announcing a bunch of new games which will be coming optimized for Tegra-powered devices. The games announced are Sonic the Hedgehog 4 Episode 2, Bucket, Golden Arrow THD, Dark Kingdom THD, Eden to Greeeen, and Hamilton's Great Adventure.
The games all look very good, but this is an example of where the claims of Android being "fragmented" have a bit more accuracy. The trouble here is that the games with THD (Tegra High Def) in the name won't just be optimized for Tegra devices, but will only be compatible with Tegra devices. Given that Tegra processors are in a minority of Android devices, it's actually somewhat annoying to see games get this kind of exclusivity.
source: Droid Life