Only spent a few hours on it since my post - but oh my goodness! As a rider myself, this game ***** me right up!! It's mental how fast they have been able to get the whole thing to run, so belting down a straight at nearly 200 (or even 170!) through all the trees, with sun flashing through; scares the living **** out of me.
It's got a steep learning curve, and plenty to tune in the control stakes - I have it in simulator (I think) mode, with manual shifting, but with a bit of ABS/anti wheelie/TC on - just to reign the bike in. I sometimes find that the rear brake behaves incorrectly though, locking the wheel (I presume) at high speed and chucking me in a hedge. That's a bit annoying, as it's not what a rear brake would do - but I can work around it.
For £25, I personally think it's worth a punt - I've only had a few time attack laps, but there's already enough there to keep me happy - and I'm proper fussy with motorcycle games, typically gravitating towards car racing. But (imo of course) they have nailed the handling on the TT game, sure it's not lifelike, but it's enjoyable and usable handling.
Currently lapping the IOM in around 28 minutes, with umpteen crashes