Quest
Quests are a type of thread that involves a drawfag essentially DM'ing for the entirety of /tg/. There is an iconic main character that /tg/ shouts commands at, and the drawfag decides which action would make most sense for the character. The end result is a highly interactive game akin to free-form roleplaying, Choose Your Own Adventure books, and Point and Click computer games.
Every quest goes on suptg with the tag 'Collective Game,' and so can easily be found here: http://suptg.thisisnotatrueending.com/archive.html?tags=Collective%20Game
Ruby Quest
Click title for main article.
Ruby Quest is a tale of mindfuckery, panic, escape, and horror, as told by Weaver. The main character is a bunny girl named Ruby, who wakes up with no memories whatsoever of her past. The threads can be found here: http://suptg.thisisnotatrueending.com/archive.html?tags=Ruby
Dorf Quest
Dorf Quest has no main article.
Dorf Quest is a tale of manliness, beardliness, rage, and dorf vs elf racial tension, as told by Gnome. The main character is Beardbeard the Dorf, a poor dorf who is trying to earn a better lot in life. He has so far learned telekinesis, died, lost his arm, and come back from the dead. The threads can be found here: http://suptg.thisisnotatrueending.com/archive.html?tags=Quest