GP Bikes is a realistic motorcycle simulator, based on a scratch built physics engine that accurately simulates motorcycle dynamics and setup options.
Players praise the game's custom physics engine for accurately simulating motorcycle dynamics. The simulation models factors like suspension, tire grip, and bike setup in meticulous detail, providing an experience that feels incredibly true to real-life motorcycle riding according to reviewers with real-world riding experience.
However, this realism also means the game has a very steep learning curve. Reviewers frequently note that it is "punishing" for new players, with many crashes and struggles to master the controls and bike handling. It requires patience and dedication to reach the point of being able to consistently complete laps without incident.
The base game only includes a single bike and a few tracks, but the real strength lies in the extensive community-created content available as mods. Reviewers highlight the wide variety of bike models, helmets, suits, and laser-scanned tracks that players can download and install to greatly expand the gameplay experience.
The game also offers online multiplayer, allowing players to race against each other. While reviewers praise the online functionality, they note that servers can sometimes be sparsely populated. The ability to race against "ghosts" of previous laps is also highlighted as a useful feature for solo practice and improvement.
Reviewers who have played the game in virtual reality (VR) comment that it provides an incredibly immersive and realistic experience, further enhancing the sensation of actually riding a motorcycle.