The Wells Fargo Center looked and sounded more like Madison Square Garden on Sunday ... 'cause Knicks fans took over the Sixers' arena for Game 4 of their NBA Playoff series -- and Joel Embiid's pissed!
The Knicks beat the Sixers, 97-92, taking a 3-1 series lead ... and their fanbase let their presence be known.
During the live broadcast, you could hear the Knicks faithful cheering -- louder than the Sixers fans -- as the Knicks won the pivotal game behind Jalen Brunson's epic 47-point performance.