PubNub has announced the deprecation of its old SDKs and introduced a new comprehensive guide for building multiplayer games, exemplified by their transformation of Rafael Matsunaga’s Genetic Cars from a single-player into a multiplayer game using the PubNub Data Stream Network. This multiplayer adaptation, named Gencar.co, allows thousands of players to participate simultaneously, enhancing the mutation rate of the genetic algorithms that evolve better racing cars on a random track. Players can observe their cars evolving in real-time and engage with others through PubNub Channel Presence, which facilitates chat and displays the number of online users. The effort underscores PubNub's commitment to innovation and community engagement in gaming, driven by CTO Stephen Blum's enthusiasm for evolving gaming challenges.