Ons
-Music. Ambience is important.
-Plot/Storyline. I'm extremely particular about this. There's too much predictable ones out there. Like, boy meets girl, they become friends and fall in love and...you get the point. More twists, more surprises, the better. So long as it's not too complicated until I lose sight of the whole story and everything else.
-Character development. Move along with the plot, please.
-Pacing. Not too fast, not too slow. No sudden "I-met-you-and-this-is-crazy-let's-get-married-and-live-happy-ever-after", thanks.
-All genres except horror. I can take the others head-on, but...for horror, I take it mild~
-Well-written cast of characters.
-RPG elements
Partial towards
-Graphics from "so-so" to "awesome". Of course, the better the artwork, the more I love it.
-BxB, GxG. No hardcore scenes for me.
-Clichés. But for the love of chocolate, please don't take a bunch of them and throw them all together.
Offs
-Mary-Sues and Gary Stus aka "perfect" characters. Just. No.
-Atrocious (read: horrible) writing.
-Bad usage of characters. Example? No offence to Twilight fans, but...
you have a good cast of characters and end up with No Consequences? It's like, me teaching my little cousin that stealing won't get you in jail or in trouble. Don't even get me started on the plot.
-Plot inconsistency. Plot is going along swimmingly well, when...
a wild muse appears! and it all goes downhill (read: veers off) from there.