PS0 is the new chapter in the Phantasy Star Online series of games, that was released for the Nintendo DS the 25 december 2008 (Japanese version). When SEGA started to work on the game, various prototypes and different character designs were tried before to choose the final one. In the earliest stage of development, they recreated the Forest area from the original PSO Dreamcast on the DS, with Boomas and the famous Dragon. It seems that initially items / mesetas were dropped on the field when an enemy was killed, instead of coming out from the final-box that appears only after all the enemies are died, as it is in the final version of the game. Probably SEGA decided to remove the single-enemy drops because of the limited graphic capabilities of the portable console (with too many 3D objects on the screen, the game could have slow down too much). In other concept arts and screens, we can see a “more stylish” design for the characters, that looked more like the one from the original PSO. In one of the artworks there are even some “flamed-head” enemies with guns, but there are no enemies like that in the final game. All these images were show at the Phantasy Star Zero Christmas Party that Sega organized to promote the game on the 25 December 2008.