Solution to Cooperation
This is a bog-standard rebus, except that you’re limited to a small circular viewport in the middle of your browser. The puzzle image is only revealed in places where at least three of your team members’ circles overlap. On desktop browsers, you can move the circle by unmaximizing your window and dragging it around. On mobile browsers, you can move it by tilting the device.

The full image is above. The rebus solves to (MARS - S) + (COAT - AT) + (CHARTREUSE - CHART - E) = MARCO REUS, a German footballer.