The remaster adds unified checkpoints, manual saving, and the ability to play as Crash’s sister, Coco, across all three games.
A common point of confusion for users downloading this update was version numbering. The game's internal menu often displayed a version number that didn't match the "v20180723" label used by the scene release. This is because the datestamp refers to the protection emulator/binary patch date rather than the official developer version string. However, the executable was successfully updated, allowing users to play without the constant fear of the game breaking after 10 minutes.
In the context of your query, "CODEX" and "Skidrow Reloaded" are names associated with the "Scene"—groups that release cracked versions of games:
: Players gained the ability to skip the intro animations after the initial Activision logo. Visual Tweaks :
This article breaks down the technical content, the community context, and the legacy of the as distributed by the Skidrow Reloaded group.