It's clearly stated that the frame rate won't be acceptable on a non-high-end device. I'm pretty sure it works "just fine" on dual-core'd ones with good GPU's.

Besides, it's v.1.1, a work-in-progress. Time will tell if it's worth the attention, but seeing that there are really powerful Droids comming up, plus Android 2.3 offers a performance boost allowing a single-core 2.3-enabled device to outrun a dual-core 2.2 device... This will rock. Very soon.