Well I play inconsistently-am pretty much in the same boat as Kitty. Play intensely for a few days, get bored, give up, rediscover, rinse and repeat. Very casual/non-committal.
But to be fair, playing games is just as bad as junk reading (i.e sappy, barely-literate books (usually fluff/comedy or fanfiction lol) that's amusing and stress-relieving but pretty much nothing else.) I think you just need to recognize games are designed to be a time-sinker and should therefore tread carefully if you choose to play them during your HSCs.
As they say, everything in moderation