Rolling Stones are hazards first appearing in Crash Bandicoot, rolling sideways on a rail in two levels.

Crash Bandicoot

Rolling Stones appear in the levels Jungle Rollers and Rolling Stones, where they can be found sometimes with one or two stones. If Crash is hit with the stone without an Aku Aku mask, he will get flattened.

Crash Bandicoot 2: Cortex Strikes Back

Rolling Stones appear in the snow levels, Snow Biz and Cold Hard Crash, where they appear at the end of both of the levels, using the same patterns from the previous game. Rather than getting flattened, Crash will turn into an angel if he is hit by one.

Crash Bandicoot N. Sane Trilogy

Rolling Stones appear in the remastered versions of Crash 1 and 2, where they serve the same purpose as the original games.