Possible Clues:

• Setting for Pac-Man
• Puzzle in a cornfield, perhaps
• PM's spoken of 'complex network, difficult to leave'
• Cornfield puzzle
• Diversion on a kid's place mat
• Pencil-and-paper puzzle
• Puzzle in which people take turns solving
• Puzzle on a place mat, perhaps
• Cornfield diversion
• Paper puzzle with a winding path