Base-game completion measures progress through a game’s core content, excluding downloadable content (DLC), seasonal content, and other add-ons. Keeping this measure separate helps users understand whether the original game is finished without optional achievements affecting the result.
In digital systems, clearly defined metrics reduce confusion and make status indicators more reliable. A platform can track base-game achievements separately from add-on achievement sets, so new content does not change what the core-game completion measure represents. This is a product-design concept, not a cybersecurity control, but it illustrates why systems should distinguish data categories rather than combine them into an ambiguous score.