Monaco is Now Available for Mac and PC on Steam! Additionally, checkout the just launched Steam Workshop and level editor! Create and share custom maps and missions for Monaco. All the tools used to build the official campaign missions and stories are available! Monaco: What's Yours Is Mine is a single player or co-op heist game. Assemble a crack team of thieves, case the joint, and pull off the perfect heist. Play with up to four people online or on the same screen. Compete with others via daily leaderboards. Find out why it won the 2010 IGF and has been described by Rev3Games's Anthony Carboni as "quite possibly the best co-op ever."