How To Find the Secret Levels in Crash Bandicoot 3 - YouTube
Crash Bandicoot 3: Warped: How to get in secret levels 31 and 32 - YouTube
Cheats and Secrets - Crash Bandicoot: Warped Guide - IGN
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Crash Bandicoot Gems walkthrough: All green, white, red, blue, purple, yellow coloured Gem locations, Key locations, Secret Levels and how to 100% each game | Eurogamer.net
Walkthrough - Crash Bandicoot: Warped Guide - IGN
Crash Bandicoot Gems walkthrough: All green, white, red, blue, purple, yellow coloured Gem locations, Key locations, Secret Levels and how to 100% each game | Eurogamer.net