Reviews for Assetto Corsa Competizione are overwhelmingly positive, highlighting the game's realism and detailed simulation of GT racing as its strongest points. Players frequently praise the graphics and sound, noting how they enhance the immersive experience. However, some criticism arises around multiplayer issues like server downtimes and community behavior, which can sour the online experience. While dedicated GT racing fans find much to love, the game can be difficult for newcomers due to its steep learning curve and lack of introductory guidance. Overall, it's a must-have for sim racing enthusiasts, especially those focused on GT3 racing, despite some technical hurdles.