It's news when two different platforms are linked for multiplayer gaming. But four? Trendy Entertainment has managed to bring cross-platform multiplayer to its Unreal Engine-powered, action-RPG Dungeon Defenders on PS3, PC, iOS and Android. The developer has even implemented cross-platform matchmaking and buddy lists across the devices.

The experience is made possible through GameSpy's online tools, suggesting that cross-platform multiplayer will not only become a reality, but a common feature down the line. Trendy utilized GameSpy Open, a new program that enables start-up and indie developers to use the company's online tools for free.

Trendy and GameSpy plan to showcase a demonstration of the cross-platform experience at GDC later this week. Dungeon Defenders is currently available on iOS and Android; PC, PS3 and Xbox 360 versions are planned for release later this year.