Metroid Prime ran on an Unreal 2 engine?

Here's a bit of a blast from the past. After some much smarter people went diving through game data, we've come to find out that Metroid Prime may have actually been running on a heavily modified version of the Unreal Engine 2. The things you don't learn until years later! It's not 100% confirmed, and I doubt we'll ever know for sure. Let the debate rage on! Thanks to KingBroly for the heads up!

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