Temple Run

The Good
Takes one minute to get into. It's not too hard to keep running/surviving for a long time, and you can definitely get better as you play more.

The "Wings" items are the very best highlight of Temple Run. The wings are available for use 30 seconds after you are resurrected. Therefore, the typical devoted Temple Run player will do this: buy a bunch of wings (at least 5, typically 8 or more), run, die, (and here's the key) survive for just 30 more seconds. You only have to survive for 30 seconds. After that, your death will be resurrected by a wing.

The Bad
Very repetitive. The last several goals (missions) are just insane, like, "Run 10,000,000 meters", "Get 100,000,000 coins". Any normal people will just give up. Unrealistic missions like this are either due to the developer's lack of game design skills, or due to their unrealistic narcissism. "We've made a game so good, people will surely play it for thousands of hours!" Sorry, no one will.

The Bottom Line
Temple Run, Temple Run 2, they're all the same. Endless runners in which you die, start from the beginning again, and die again. Nothing more. One minute of watching someone else play it will give you a good idea of what it is.