Computer randomly shut off. Still works though (First time)

[M05final]

So my computer randomly turned off will i was playing Spore ( I know old game haha) anyways. It didn't give me a warning or anything its just turned off. Almost like if the power went out. So first thing i check is to see if maybe my liquid cooling leaked. Nope. So is there anything else i should be checking out? should i be worried? or is this sometimes normal?

PC SPECS
http://ca.pcpartpicker.com/p/ssLZK8

Note:
Ive never had this problem in the last year and a half.
And i read that spore has problems with some systems, and this is the first time ive played spore on this computer so maybe that's it..?
My computer also turned right back on without any issues after.
Also if it matters i got windows 10
Also felt my PSU and it was warm or anything.

Game also did crash about 3 times in 4 hours.

Anyways thanks for the help

 

[Jasjar]

Well if it crashed once, there is nothing to worry about really. What are your CPU temps?

 

[Hlsgsz]

No worries man.
You can try to stress test it to make sure yoour thermals are alright though.
Run prime95 in maximum heat mode and furmark in gpu stress test mode at the same time for 15 minutes.
If it can take that, it can take any game.

 

[M05final]

Well if it crashed once, there is nothing to worry about really. What are your CPU temps?

20-25C idle 33-44 Underload

 

[Jasjar]

Those temps are very good. Nothing wrong with your PC.