Spotlights are meter-tall red searchlights which can be attached to floors, walls and the ground by adjustable joints and are constantly shooting out a column of light.
In the console/PC version of Sonic Generations, the Spotlights are only encountered in the Espio: Master of Camouflage Challenge Act. In gameplay, they are used to reveal Espio while he is invisible. By using either the Homing Attack or the Spin Jump on the spotlights, their light columns will move around the area in an arch. If Espio is it hit by that light, he will become visible, thereby making him vulnerable to attacks, and temporarily immobilized. After a while though, even if the spotlights should constantly shine on him, Espio will recover and move away.