Phantasy Star Online
Phantasy Star Online
Even after the Sega Dreamcast was discontinued, both Phantasy Star Online and Phantasy Star Online Ver. 2 can still be played online by using Code Breaker codes to access private servers.
Contributed by ABOhiccups
Producer Takao Miyoshi said in an interview with PSO-World that the developers expected Phantasy Star Online to only run for a few months, but it's success in Japan (and slight success in other parts of the world) lead it to run for much longer.
Contributed by mattwo