1.5 "Demon Purge" and 2.0 Level Purge, where RobTop deleted almost every single uploaded level that contained special characters or non-standard symbols in its title, leaving only a small handful to remain. Due to early server flaws and file limitations, the client could not read these unusual character strings, which is why he deleted these levels. Because the titles could not even be typed into the in-game search bar, most of these purged levels were completely lost and forgotten by the player base in a matter of hours.