Local Multiplayer (aka "Split Screen" and "Shared Screen")

For downtime, I occasionally toy around with a small game that uses DanielSnd's COOP Action Game Kit. It does local, shared-screen multiplayer. On its thread, someone recently asked about online multiplayer, suggesting multiplayer games these days need to be online.

I like to know your thoughts, especially given the recent resurgence of local multiplayer in...

Local Multiplayer (aka "Split Screen" and "Shared Screen")