Possibility of signing contracts was proposed by some playes long time age, however, there was no justification for the introduction of such feature from the game mechanic point of view (It was hard to put them together with some other elements from the world of games). With the appearance of sequels some began to grieve, on the fact, that not always all creators are available, when they wanted to make the sequel of its hit. At this point, this option began to make sense, but I had to find a reasonable way of incorporation into the mechanics of the game.
And here I probably did. With the next version there will be a new option to sign a contract with choosen creator. Contracts will be subject to the following rules.