You might very well be hip to webcomics. Good for you. I find though that a lot of people who read webcomics real the couple-panel joke comics. Things like cryptically url'd XKCD & Dinosaur Comics. That being the case, I figured I'd put a quick list together of some of my favorite longer-form comics. Some of these range in tone from soap opera to Dada, but they share the fact that there are longer arcs, a rise & fall of narrative. These are culled from the list I keep; they may suit you, & they may not. You may have heard of them, you might not. Some are pretty popular, others less so.
Homestuck is the current amazing & surreal MSPaint Adventure story line, which really soared in the now complete Problem Sleuth. Minus is about magic & extinction. Dresden Codak is an amazing exploration of time & transhumanism &, well, everything. Gunnerkrigg Court is about a spooky school. Kukuburi is about a dreamworld. The Meek is filled with Emperors & naked girls. Family Man is about religious scholarship...& werewolves. Daisy Owl is cute & has space babies. The Abominable Charles Christopher is about a Sasquatch. The Loneliest Astronauts is about space, & people you don't like. Looking for Group is a parody of online & tabletop gaming. Order of the Stick is a Dungeons & Dragons spoof. Dr. McNinja is a parody of everything awesome. Minion Maze is another DnD homage. Oglaf is a NSFW parody of fantasy in all its forms. Bad Machinery came out of Scary Go Round which came out of Bobbins. Questionable Content is a soap opera that doesn't betray you.