Why are you guys recommending Arcade Games? This thread was posted in July 2011 geniuses.
For others looking for good arcade games? While I am generally against necroposting, once the thread is up and running again, especially one that originally got as few posts as this one, why not run with it?
I think it was about 7-8 hours on the first playthrough. It does have a bunch of unlockables and new game+ which give it replay value. You will not be able to unlock all the weapons and gadgets in one playthrough.