This is a great advance over some of the earlier titles because it allows for more free-roaming action. The environments are awesome and it was a smart move to allow gamers to crawl all over them. This serves a practical purpose once you realize there are hidden items in each level. Hard to find, yes... but in finding them you'll open up several special areas within the game. It's like the special packages hidden throughout Grand Theft Auto, but much harder to find. As you might expect, there are lots of extreme elements in the landscape, including plenty of fortuitously placed objects in the landscape just waiting for a crafty rider with the huevos needed to go after big air. During races, the action is fast-paced and the sound of other riders approaching, taking the lead, and falling behind is all part of the sonic backdrop. Music plays a big role in the game and everything here is heavy, head-banging fare. The lack of variety in the tunes wears thin unless your taste doesn't range very wide. Mine does, so the option to play tunes saved on my PSP would have been a big plus.
Little touches in the design of MX vs. ATV Untamed mean a lot to fans of previous similar titles. A wide range of racing environments and the corresponding scenery keeps things fresh. If you get bored on bikes, you can switch to trucks. There are some named riders and plenty of customization possible once you start scoring big on the tracks. Costumes, designs for your bikes, it all makes for a slightly higher watermark for off-road two- and four-wheel racing on PSP.