Multiplayer

Two-player mode lets the player play "The Blockheads" with a friend via Apple's Game Center. Each time the player comtinues playing in a game world, the player can choose whether to play alone or invite one friend to play with them.

To invite a second player, their device must be on the same version of iOS and the same version of The Blockheads as the player's and they must have Game Center notifications turned on. If the connection is deemed (by the app) to be too slow to handle voice chat it will be deactivated for that session.

Although the game offers "Auto-match" in the multiplayer game screen, majicDave stated:

"Due to limitations in the way Game Center works I wasn't able to implement auto matching for multiplayer. I also couldn't disable the auto matching user interface. It's misleading I know and I hope to fix it somehow. But for now, the only way to play multiplayer is to invite a friend." Source