''Fortress'' is a shooter video game developed by CCR Inc and published by Netsgo. The game spawned an animated series, ''

Tank Knights Fortress ''Tank Knights Fortress'' (Hangul: 포트리스, ''Poteuliseu'' in short or 무한 전기 포트 리스, ''Muhan Jeongi Poteuliseu'' full name) is a Korean-Japanese co-produced animated series by SBS Productions, Dong Woo Animation and Daewon ...

'', and a sequel, ''Fortress 2''.포트리스
/ref> On November 18, 2011, service for the game was terminated in

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...

and Japan.

References

2001 video games Multiplayer online games Shooter video games Video games developed in South Korea Windows games Windows-only games {{shooter-videogame-stub