Loot Ninja writes:
"It's still not a common occurrence for an iPhone/iPod Touch game to have head-to-head multiplayer elements for various reasons. I would imagine cost would be at the top of that list. When one finally comes down the pipes it's difficult to not get overly excited. Multiplayer games are the best way to get the most bang for your buck because of added re-playability, so it's really a shame that Uno has a great system set-up for multiplayer but the developers did a poor job on the technical side of things."
Uno by yourself is ok, but multiplayer is the bread and butter. Sucks it doesn't work very well.