Roblox explains Build game evaluation, distinguishing working code from engaging games

On October 8, 2026, Roblox revealed how it evaluates games built with Build, assessing everything from what creators intended to do to the player experience. Criteria therefore do not end with code passing; they also consider whether the game plays as intended and whether there is a compelling reason for players to keep playing.

The evaluation framework is divided into four aspects: specification quality, in-studio game quality, player input testing, and visual quality and experience. Each aspect addresses different types of issues, ranging from games that do not meet the requirements to systems that function but are unengaging to play.

Code passes, but the game still lacks motivation.

The Skyforge Ascent demo scored 98/100 in engineering and passed all gameplay tests, but received a design score of 31/100. Roblox explained that the game's path was too linear, lacked variety, and offered insufficient motivation to return for replay.

For those using AI to develop games, this example illustrates that system testing and gameplay loop testing are distinct tasks. Passing technical checks indicates that the game functions, while actual playtesting answers whether players understand the objectives and wish to continue playing.

Data and credits: Roblox Build Assessment Article