The Combine Ring (コンバインリング,Konbain Ringu?) or Hyper Ring (ハイパーリング,Haipā Ringu?) is a recurring monitor power-up that first appeared in Knuckles' Chaotix. When obtained, it combines the player's collected Rings.
The Combine Ring's icon on a monitor's screen is represented by a dark blue ring. When obtained, this power-up causes the Rings the player hold upon taking damage to merge together into larger Ring(s) as they are dropped. Should the player then re-obtain such Rings, they will regain Rings equivalent to either the entirely of the Rings they lost or just a portion of it, similar to a Super Ring.
The Combine Ring first appeared in Knuckles' Chaotix. When picking up the Combine Ring, its icon appears at the bottom of screen and stays there until the player receives damage. At that point, the player will only lose a single, larger Ring which will return all the Rings the player just lost after taking damage. If the player does not obtain the large Ring within a few seconds though, it will burst into the usual shower of regular Rings when the player takes damage.
The Combine Ring later reappeared in Sonic Mania where it is called Hyper Ring (ハイパーリング,Haipā Ringu?). In this game, the effect of the Hyper Ring is slightly different compared to the effect in Knuckles' Chaotix. Instead of an icon appearing at the bottom, when a character is holding a Hyper Ring the Ring counter will turn blue and the Hyper Ring icon will appear next to the total. Also, instead of combing all the player Rings into one large Ring when taking damage, it combines the Rings into a maximum of six large Rings, each with an equal part of the player's original Ring count that is returned when they are re-obtained.