Six Sigma
The Six Sigma quality-management philosophy is one which calls for a defect-free status, which is defined as having 99.99966% of products or attributes be within specification, or no more than .00034% out of specification. In the case of video games, they are an entertainment medium in which enjoyment is extremely personal and subjective to the user. As such, unless there is an overwhelming negative sentiment regarding the game from media outlets and customers alike, it is recommended to move away from the Six Sigma approach. All of the most critically acclaimed and top review games of all time have had average review score less than the threshold of Three Sigma, much less Six Sigma (per Metacritic). In the industry, the games considered to be of the highest quality generally have a Metacritic score of 90 and above, with those considered to be “legendary” and “genre-defining” as 95 and above. The Six Sigma’s formalized problem-solving approach (DMAIC process) can be applied in the context of a Live Service game’s post-release development cycle, in order to increase the quality of the game further. Outside of the DMAIC process, however, it is highly recommended not to utilize the Six Sigma philosophy’s evaluation method. Instead, it is recommended to aim for a “Two-Point-5 Sigma” evaluation method in which 85% (±2.5σ) is the baseline for top-quality, with room to improve towards as close to Three Sigma as possible.
References
(n.d.). Game Releases by User Score. Metacritic. https://www.metacritic.com/browse/games/score/metascore/all/all/filtered