Fahrenheit Frenzy

Fahrenheit Frenzy (やけどに きをつけろ！ lit. Beware of Burn Injury! in Japanese) is the fifteenth level and is the last level of the third warp room in Crash Bandicoot: The Wrath of Cortex.

This level takes place in a lab inside a volcano. In the beginning, Crash Bandicoot uses his copter backpack to get through a cave to reach the lab. Inside it, there are rooms that can make Crash invisible and show his bones. This level also marks the debut of invisibility crates which turn Crash invisible for a few seconds when spun, causing him to be immune to lasers.

Trivia

 * This is one of only two levels in the game to feature invisibility crates, the other being Weathering Heights.