<Table> <Tr> <Td_colspan="2"> Attack on Titan </Td> </Tr> <Tr> <Td_colspan="2"> Cover of Attack on Titan volume 1 </Td> </Tr> <Tr> <Th_colspan="2"> 進撃 の 巨人 (Shingeki no Kyojin) </Th> </Tr> <Tr> <Th> Genre </Th> <Td> Dark fantasy, post-apocalyptic </Td> </Tr> <Tr> <Td_colspan="2"> Manga </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Hajime Isayama </Td> </Tr> <Tr> <Th> Published by </Th> <Td> Kodansha </Td> </Tr> <Tr> <Th> English publisher </Th> <Td> Kodansha USA </Td> </Tr> <Tr> <Th> Demographic </Th> <Td> Shōnen </Td> </Tr> <Tr> <Th> Magazine </Th> <Td> Bessatsu Shōnen Magazine </Td> </Tr> <Tr> <Th> Original run </Th> <Td> September 9, 2009--present </Td> </Tr> <Tr> <Th> Volumes </Th> <Td> 25 (List of volumes) </Td> </Tr> <Tr> <Td_colspan="2"> Novels </Td> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Before the Fall </Li> <Li> Harsh Mistress of the City </Li> <Li> Lost Girls </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Manga </Td> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Junior High </Li> <Li> Before the Fall </Li> <Li> No Regrets </Li> <Li> Lost Girls </Li> <Li> Spoof on Titan </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Anime television series </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> Tetsurō Araki Masashi Koizuka (Seasons 2--3) </Td> </Tr> <Tr> <Th> Produced by </Th> <Td> Tetsuya Kinoshita Kensuke Tateishi George Wada Shin Furukawa Tomohito Nagase Toshihiro Maeda </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Yasuko Kobayashi </Td> </Tr> <Tr> <Th> Music by </Th> <Td> Hiroyuki Sawano </Td> </Tr> <Tr> <Th> Studio </Th> <Td> Wit Studio Production I.G (Production cooperation) </Td> </Tr> <Tr> <Th> Licensed by </Th> <Td> Madman Entertainment Funimation Manga Entertainment (Season 1) Sony Pictures Home Entertainment (Season 2) </Td> </Tr> <Tr> <Th> Original network </Th> <Td> MBS, Tokyo MX, BS11, FBS, TOS, HTB, TVA, GTV, GYT, TVS, tvk, CTC, RSK, BSN, RCC, SBC, TBC, SBS, IBC, RKK, ITC (Seasons 1--2) NHK G (Season 3) </Td> </Tr> <Tr> <Th> English network </Th> <Td> SBS 2 Aniplus Asia Adult Swim (Toonami) </Td> </Tr> <Tr> <Th> Original run </Th> <Td> April 7, 2013--present </Td> </Tr> <Tr> <Th> Episodes </Th> <Td> 37 + 8 OVA (List of episodes) </Td> </Tr> <Tr> <Td_colspan="2"> Anime film </Td> </Tr> <Tr> <Th_colspan="2"> Attack on Titan--Part 1: Crimson Bow and Arrow Attack on Titan--Part 2: Wings of Freedom </Th> </Tr> <Tr> <Th> Directed by </Th> <Td> Tetsurō Araki </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Yasuko Kobayashi </Td> </Tr> <Tr> <Th> Music by </Th> <Td> Hiroyuki Sawano </Td> </Tr> <Tr> <Th> Studio </Th> <Td> Wit Studio Production I.G (Production cooperation) </Td> </Tr> <Tr> <Th> Licensed by </Th> <Td> Funimation </Td> </Tr> <Tr> <Th> Released </Th> <Td> November 22, 2014 (Part 1) July 27, 2015 (Part 2) </Td> </Tr> <Tr> <Th> Runtime </Th> <Td> 120 minutes each </Td> </Tr> <Tr> <Td_colspan="2"> Anime film </Td> </Tr> <Tr> <Th_colspan="2"> Attack on Titan: The Roar of Awakening </Th> </Tr> <Tr> <Th> Directed by </Th> <Td> Tetsurō Araki Masashi Koizuka </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Yasuko Kobayashi </Td> </Tr> <Tr> <Th> Music by </Th> <Td> Hiroyuki Sawano </Td> </Tr> <Tr> <Th> Studio </Th> <Td> Wit Studio </Td> </Tr> <Tr> <Th> Licensed by </Th> <Td> Madman Entertainment Anime Limited </Td> </Tr> <Tr> <Th> Released </Th> <Td> January 13, 2018 </Td> </Tr> <Tr> <Td_colspan="2"> Live - action </Td> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Attack on Titan (2015 film) </Li> <Li> Attack on Titan: End of the World (2015 film) </Li> <Li> Attack on Titan: Counter Rockets (2015 miniseries) </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Video games </Td> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Shingeki no Kyojin </Li> <Li> Shingeki no Kyojin - Hangeki no Tsubasa - </Li> <Li> Blu - ray Disc Visual Novel Vol. 1 </Li> <Li> Attack on Titan: Humanity in Chains </Li> <Li> Blu - ray Disc Visual Novel Vol. 2 </Li> <Li> Shingeki no Kyojin - Hangeki no Tsubasa - Online </Li> <Li> Shingeki no Kyojin - Jiyū e no Hōkō - </Li> <Li> Shingeki no Kyojin Banda Attack on Typing </Li> <Li> Attack on Titan </Li> <Li> Attack on Titan 2 </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Anime and Manga portal </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Attack on Titan </Td> </Tr>

How many ova episodes does attack on titan have