The use of OpenGL for wallhacks was innovative because it didn't require direct modification of the game's source code. Instead, it leveraged the flexibility of OpenGL to achieve the desired effect. This method was particularly popular among CS 1.6 players because it offered a seemingly undetectable way to gain a significant advantage. During the peak of CS 1.6's popularity, OpenGL wallhacks became a staple in the cheating scene. Players could easily download and install software that enabled wallhacking, making it a widespread issue in both casual and competitive matches. However, as with any cheat, anti-cheat developers and game administrators worked tirelessly to detect and counter these hacks.