Spheres are a recurring variant of bumpers that appear in the Sonic the Hedgehog series. Unlike normal bumpers, these obscure variants disappear after bouncing off them. This act either awards points or nothing. These bumpers bear a resemblance to frogs' eggs, which apparently have a more solid orb inside the weaker one.
Sonic the Hedgehog CD
In Sonic the Hedgehog CD, these bumpers can only be found in the second and third zone of every timeline in Collision Chaos. Dozens of these bumpers appear in large ravines where the player has to clear a way through them to proceed with the zone. As the player bounces off a sphere, one hundred points are granted. These spheres also appear during the third Zone's boss battle, where they float individually.
In the present, these bumpers consist of transparent red orbs with a red core. In the past, their orbs are transparent yellow and their cores are green angular-shaped rocks. Finally, in the good future, they have transparent cyan orbs with green and yellow, angular-shaped rocks for cores, while in the bad future, their have transparent orange orbs with dark blue and green cores.
In Sonic Mania, similar objects appear in Mirage Saloon Zone. They behave much like their Sonic the Hedgehog CD counterparts, except they only give ten points after each bounce. They come in two variants: magenta orbs with a yellow-orange shape inside of them that are used in inside areas, and cactus-colored piñatas that are used in outdoors areas. For some reason, all breakaway bumpers in this game only launch the player upwards.
↑Get wild! Pop from baskets and bounce off spheres like a giant pinball. Sink into the swamp to search for hidden passages, but don't go too low. - American instruction manual of Sonic the Hedgehog Triple Trouble, page 13.