Right now there is a way to see and search through all the games that have Quests available in the Quests forum: Grand List of Official Quest Threads. This thread contains all the threads with Quest discussions for the games that have them.
Do note that the list hasn't been updated yet, since there have been 2 new games added with Quests since the last update on March 8th. This will soon be updated though.
As for the future, there are surely going to be changes in how the Quests can be searched and looked at, to see which Quests you still need to achieve. This only takes a little time and patience. ;)
And on behalf of the ArmorGames staff, thank you for the praise! =)
