The Public-Private Partnerships (PPP) contract structure is characterized by the sharing of project risks between the government and the investor. PPPs have long maturation maturities, high initial investment volumes and revenue uncertainty. The future behavior of public and private agents may carry an additional risk, making projects unattractive when relevant information is not evident in a contract. Game theory has been a widely used instrument to provide analytical solutions when the problem of information asymmetry is present. Therefore, this thesis uses the concepts of mechanism theorists compatible with incentives for PPPs, aiming: (i) improvement of ex-ante and ex-post contractual failures; (ii) to improve a PPP renegotiation game model, showing how opportunistic behavior can be avoided. It analyzes the concession process of the Maracanã Complex as illustrative case via use of propositions, lemmas and theorems, showing that the State Government s announcement of Rio de Janeiro is sub-optimal from the point of view of the mechanisms of Design Theory.