3D Realms is a legendary American video game publisher with an extraordinary legacy that spans nearly four decades of pioneering contributions to PC gaming and interactive entertainment. Originally founded in 1987 as Apogee Software by Scott Miller, the company revolutionized game distribution by popularizing the innovative shareware model, which allowed players to experience games for free before purchasing, fundamentally changing how the industry approached marketing and player acquisition. Rebranded as 3D Realms in 1996 to focus on cutting-edge 3D gaming experiences, the company established itself as a creator of iconic action franchises and a publisher of boundary-pushing titles that defined entire genres of gaming. Known for their motto "Redefining AAA: Action, Attitude, Adrenaline," 3D Realms has consistently championed bold, unapologetic gaming experiences that prioritize pure entertainment value and player empowerment. After weathering significant financial challenges in 2009 that temporarily shuttered operations, the company was successfully revitalized in 2014 and now operates as part of Saber Interactive from their base in Denmark, continuing their mission to publish memorable action-oriented games. 3D Realms represents the entrepreneurial spirit of independent game development and has maintained relevance across multiple generations of gaming platforms by consistently supporting innovative developers and delivering experiences that capture the excitement and irreverence that made PC gaming a cultural phenomenon. Their enduring influence on the gaming industry extends far beyond their impressive catalog, having helped establish many of the business models and creative approaches that continue to shape modern game development.