I want to ask a question! How for other games you can't make a single quest?
Staffs and all above you say it takes long time.For this game you put up to 16 quests.Why don't you take some of that time of Gemcraft and try to put up with other quests for other games?
Putting quests into a game is done on a developer by developer basis. Quests are not put into Armor Games flash games directly by the Armor Games staff.
Armor Games has to contact the developer of a game and ask the developer if they are willing to put quests into the game. Some developers might turn down Armor Games and opt not to put quests in their games. Some developers may never respond back to Armor Games, thus leaving the game "questless". I can imagine the process of adding quests to a game definitely is lengthy as it probably requires:
1.) Initial contact from Armor Games to the developer with a request to put the quests in the game.
2.) A reply from the developer to Armor Games. Note that developer must reply and agree to put the quests in and the developers of flash games come form all over the world. Meaning that getting in contact with a developer is not like phoning up a friend who lives five minutes away. It may take a developer some weeks or more to respond to an E-mail.
3.) After the developer agrees, the developer must take the game code and program the quests into the game code itself. Remember that developers are people too and may be busy with other projects, making new games, and other life occurrences. Thus, this step may take a while as well.
4.) After the developer finishes coding the quests, the quests must be tested if they work correctly.
5.) The developer submits the new game code, with the quests, to Armor Games.
6.) The quests are probably tested again by Armor Games staff and Admins, before they are visible on the site.
7.) The quests are released.
I have never actually seen the process take hand first place, but it is probably pretty close to what I've said. Try to understand how much time that this takes.
Lastly, there are a lot of games on Armor Games, but many of them are very old. It may be extremely difficult to get in contact with a developer that hasn't been in contact with Armor Games for over 5 years. E-mails and phone numbers can change over the years, which is one of the reasons it is hard to contact inactive developers. Also, there is little interest in putting quests in old games (unless they are classics) as much fewer people will be interested in playing older games with quests than newer games with quests. Therefore the pool of eligible games for quests is quite a bit lower than it seems.
Hope that helps. :]