Part 9 Crash Bandicoot 1 Story Mode Walkthrough 100% and in this video the levels Upstream,Rolling Stones and Cortex Power are completed again to obtain a Clean Gems.
With Blue Gem obtained in Toxic Waste we can get a Clean Gems in Rolling Stones and Cortex Power, Orange Gem are obtained in Generator Room so now we can obtain the Clean Gems in Upstrem too.
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