Game Center!

Games get more fun with the Google Play Games app. Compete with friends, track your achievements and pick up wherever you left off, on any of your devices. As you master more games across Google Play, show off your skills in your all-new Game Profile. And whether you love puzzles, racing, sports or action games, you can explore and choose from thousands of great games from right within the app. Play the world, anywhere in the world, all from one place.

Kongregate has free games that you can play online. Choose from thousands of free flash games. Complete online game achievements to win badges.

player.me provides gamers with a central web presence where all of their fans can go to connect with them across the web. Gamers can build their network by connecting with gamers, market themselves to grow their fanbase and take part in Player.me exclusive events. They can also join groups which could be simple fan groups, clans or for gaming-unrelated topics.

Heroic Labs are the developers behind Nakama server - The open-source social and realtime server for apps and games. Nakama powers social friends, groups, in-app chat, leaderboards, storage, matchmaking, multiplayer and more in a single server binary.

PlayStation Network, often abbreviated as PSN, is an online multiplayer gaming and digital media delivery service provided/run by Sony Computer Entertainment for use with the PlayStation 3 and PlayStation Portable video game consoles.

Vizzed is an online community with 1000s of free classic retro games. Play our games online here: http://www.vizzed.com/vizzedboard/retro/

Xbox Live (Silver) is free for basic features such as messaging and dashboard and game updates.

Heroic Labs builds Nakama; an open-source distributed social and realtime server for games and apps. It includes a large set of services for users, data storage, and realtime client/server communication; as well as specialized APIs like realtime multiplayer, groups/guilds, and chat. Nakama works with any kind of games device including consoles and VR headsets; and across games platforms like iOS, Android, and Windows Phone.

Playfire is the global community for gamers. Get a killer profile, track news & discussion for your favorite games, and follow your friends progress in games.

Vapor is a client for installing video games made with the game engine LÖVE.

Grantoo makes a multiplayer platform for mobile games allowing players to compete with their friends online.