Bus Simulator 21 is a comprehensive transit management sim that expands significantly on its predecessor with a massive fleet of 30 licensed buses and two large-scale maps. While it offers a "zen-like" experience for enthusiasts, it is frequently critiqued for technical jank and repetitive gameplay.

: Combines the sandbox freedom with the economic challenges of the campaign.

The game received a major "Next Stop" update which improved the experience by adding:

While the game has a standard retail price—often listed around on Steam or Epic Games —it has historically been offered for free during limited-time promotions, such as on the Epic Games Store in December 2024.

: Frequent bugs, clipping, and poor optimization on lower-end PCs.

: Manually selling tickets and using wheelchair ramps.