The concept of a two button (plus tilt) trials bike ride over hills and obstacles is nothing new to the mobile gaming world, of course. But with the integration of a full 3D real time rendered world (thanks to the Unity game engine), Trial Xtreme 3 becomes something of a tour de force. In frustration gameplay(!) You see, this is, ultimately, a hard game, but thanks to the immediate 'continue' and 'restart' buttons it's also addictive ("Come on, I must clear that bridge this time round!...") Even the freemium features seem well pitched - highly recommended.

From the description in the Windows Phone Store:

Trial Xtreme 3, will take your breath away with its new innovations and amazing features. Tackle 112 completely original courses, fighting your friends for the race, win while carefully controlling your bike to ensure that you don’t fall victim to one of the many hundreds of mines, water pipes, or wrecked cars that are standing in your way. Features:

•New, advanced physics engine which revolutionizes gameplay

•32 free levels out of a total of 112 (!) levels across 6 worlds and hundreds of new obstacles

•Play alone or head to head 

•Different high score table for every level

•Customize your bike and rider

•Play with phone’s accelerometer or buttons

•High resolution graphics for both phones and tablets

As with other Unity games on Windows Phone, the graphics detail and performance is tremendous. Here's a walk through:

Professional graphics from the outset....

Much of the freemium element here is geared around customising both your and your bike's appearance. Coins are earned through riding or, as you'd expect, by buying them outright in the freemium system....

Good to see a 'restore purchases' system, in case you've had to re-install the game for some reason....

The default control system, which works well. The key to success is to master the leans forwards and backwards while you juggle the throttle and brake. It's fair to say that mastering this key isn't trivial!!

Off and riding. The 3D world isn't really 3D in that you can't deviate from the track or explore, but there is real depth to the renderings...

One slightly ghoulish touch is that when you crash, you get groans, agonised and trembling body, and cracked 'glass' (maybe from the camera filming you?)

Five worlds are available for free, with only one locked - in all 32 levels are available across these without ever having to pay extra in the freemium system, apparently.

Although there's not true multiplayer, there are plenty of real world opponent 'shadow' tracks that you can race against, which adds extra competition....

Gorgeous 3D renderings and real time animations litter the Trial Xtreme 3 world....

Floating through the sky on a jump and chasing a 'shadow' rider...

If and when you do need more coins, to unlock customisations or levels, they can be bought here - though see below...

In regard to the last screenshot above, I found it disingenuous to not say on the buttons how much they equate to in real world money - instead, you have to tap through to the Windows Phone Store in order to see these amounts. For the record, the 'best seller' is £7 in UK money and the top value coinage is £27. That £7 is enough to see most players through the lifetime of the game and that amount isn't unreasonable for a top quality 3D title with tens of hours of gameplay in it, but I'd still like to have seen real world amounts in the game itself.

As I say, highly recommended, overall though. You can download Trial Xtreme 3 here for free in the Store.