CTR: Crash Team Racing - Review Copy
Before a game is released, a copy is usually sent to professional reviewers so they can prepare an article about the game beforehand. Review copies are usually identical (if not exactly the same) as the respective commercial releases, but sometimes there is still work put into the games after they're sent to reviewers.
Crash Team Racing's review copy was leaked to the public in 2012. Though it's mostly complete, it features a lot of small differences from the final release, with some elements having been changed and others removed altogether.