The regional style of the cases is a purely cosmetic option, because all independent titles released on CD-ROM are region-free as Mil-CDs in general cannot be region locked, while GD-Rom-based games indeed are, requiring one of many commercially released boot discs like the GameShark, CodeBreaker and others, which enable all regions to boot. Problems may arise when using this method because of PAL games on games where no option of 60 Hz is available in most of all PAL games released, being the first console to support PAL60 video output but which is implemented on a per-game basis as the Dreamcast itself does not contain an operating system, thus making games from regions other than PAL, which always run at 60 Hz, making the game not run at its intended full speed and may feature horizontal borders around the screen. The PS2 is notorious for not having many 60 Hz games in PAL regions. Most of the games currently in development and most of the many recently released, have all been developed using the open source and free SDK known as KallistiOS, or an equally legal alternative, providing about the same functionality as Sega's own SDK developers have claimed, stating the Dreamcast is very developer friendly, however, some claim good performance is easier to achieve in 3D with the officially SEGA SDK, although illegal without a license to even use, let alone sell the games at retailers later, which makes it something directly illegal and may end in serious consequences, while also hindering a person If they should need support, as it is forbidden by law naturally few people use it when legal, free alternatives are available. SEGA of Japan, regarding its much longer lasting audience and fanbase with a majorly prolonged time frame of enjoyment from their console as it lasted 6–9 years longer with new titles very regularly, while seeing a surge in popularity compared to earlier, saw the biggest majority of game releases as of after 2017 – the same year most of the online functions of the console was bought back Thanks to projects like the now finished project known as DCSERV but also the rather large community as a whole, inventing new methods of utilizing the modem to connect to the newly reverse engineered SegaNet replacement. way back to almost the beginning of the releases started coming, are almost exclusively of the English-only spoken type,