Mine gets a little warm when charging, otherwise it's fine -- though I have no way of measuring the surface temperature, how are you measuring it? If it feels 'dangerous', you should contact support, maybe it's defective.
No offense, but this is a variable question. There are many different contributing factors: including the case (if any), the ambient temperature, the game you're playing, the resolution settings and your expectations of what is dangerous vs. what is listed as dangerous.
Like others have suggested, support is best answer as opposed to our opinions.
In my testing, the SP2 throttles at 80 degrees Celsius to maintain a max temperature of 80 degrees. Unless you put the SP2 in a bag or some other confined space, it'll be fine. Most computer parts these days can take up to 90 degrees and higher as their designed max operating temperatures.