Question: Which new intellectual property was released by developer D-Pad Studio?

full_context: Document 1: Hatoful Boyfriend: Hatoful Boyfriend: A School of Hope and White Wings (Japanese: はーとふる彼氏 〜希望の学園と白い翼〜 , Hepburn: Hātofuru kareshi ~kibō no gakuen to shiroi tsubasa~ ) is a Japanese dōjin soft otome visual novel released in 2011 for Microsoft Windows and OS X. It was developed by manga artist Hato Moa's dōjin circle PigeoNation Inc., and is the successor of a Flash game of the same name she created for April Fools' Day in 2011. A free demo version of "Hatoful" made with the FamousWriter engine was released later that year, followed by a full commercial version released on 30 October 2011 at , and an English version released in February 2012. An international remake by developer Mediatonic and publisher Devolver Digital, dubbed "Hatoful Boyfriend HD" in Japan, was released on 4 September 2014 for Microsoft Windows, OS X, and Linux and for PlayStation 4 and PlayStation Vita on 21 July 2015 in North America, and on 22 July 2015 in Europe, respectively. A port for iOS was released on 25 May 2016.
Document 2: 2015 in video gaming: The year 2015 saw releases of numerous video games, including new installments for some well-received franchises, such as "Anno", "Assassin's Creed", "", "Battlefield", "Call of Duty", "Disgaea", "Dirt", "Fallout", "Fatal Frame", "Five Nights at Freddy's, Forza Motorsport", "Guitar Hero", "Halo", "Heroes of Might and Magic", "Hotline Miami", "Just Cause", "King's Quest", "Kirby", "Magicka", "Mario Party", "Mario vs. Donkey Kong", "Metal Gear", "Minecraft", "Mortal Kombat", "Need for Speed", "OlliOlli", "Resident Evil", "Rock Band", "StarCraft", "", "Tales", "The Witcher", "Tomb Raider", "Tom Clancy's Rainbow Six", "Tony Hawk's Pro Skater", "Total War," "Toy Soldiers", "Xenoblade Chronicles", "Yakuza" and "Yoshi". In addition, it saw the release of many new intellectual properties, including "Dying Light", "Evolve", "Life Is Strange", "Bloodborne", "Until Dawn" and "Splatoon", and indie titles such as "Her Story", "Ori and the Blind Forest", "Rocket League", and "Undertale". Many awards went to games such as "Bloodborne", "", "", "Fallout 4", "Rocket League", "Ori and the Blind Forest" and "Rise of the Tomb Raider".
Document 3: List of accolades received by Titanfall: Titanfall is a 2014 multiplayer, first-person shooter video game developed by Respawn Entertainment and published by Electronic Arts exclusively for Microsoft Windows, Xbox 360, and Xbox One. The game was highly anticipated as the debut title from developers formerly behind the successful "Call of Duty" franchise. It was released March 11, 2014, to what video game review score aggregator Metacritic called "generally favorable" reviews. Critics considered the game a successful evolution for the first-person shooter genre but did not agree as to whether the game delivered on its anticipation.
Document 4: N++: N++ is a platform video game developed and published by Metanet Software, and is the sequel to the Adobe Flash game N+. The game was initially released for the PlayStation 4 game console on July 28, 2015 in North America, and July 29, 2015 in Europe, and was later released for the Microsoft Windows and macOS operating systems on August 25, 2016 and December 26, 2016, respectively. A version for Linux is currently in development. An expansion to the game, entitled "N++ Ultimate Edition", was released for the Windows version of the game on April 21, 2017, as a free update to the game.
Document 5: 2012 in video gaming: The year 2012 saw the release of numerous sequels to critically acclaimed video games, such as "Alan Wake", "Assassin's Creed", "Borderlands", "Call of Duty", "Counter-Strike", "Darksiders", "Dead or Alive", "Diablo", "Fable", "Far Cry", "Forza Motorsport", "Halo", "Hitman", "Mario Party", "Marvel vs. Capcom", "Mass Effect", "Max Payne", "Medal of Honor", "Modern Combat", "Need for Speed", "Ninja Gaiden", "PlanetSide", "Pokémon", "Prototype", "Resident Evil", "Silent Hill", "Sniper Elite", "Spec Ops", "Super Mario", "Tekken", "The Darkness", "Tom Clancy's Ghost Recon", "", "Trials" and "X-COM". In addition, it saw the release of many new intellectual properties, such as "Asura's Wrath", "Dishonored", "Journey", "Lollipop Chainsaw" and "Sleeping Dogs". Many awards went to games such as "Borderlands 2", "Far Cry 3", "Journey", "Mass Effect 3", "The Walking Dead" and "". It began with the worldwide release of Sony's newest handheld game console, the PlayStation Vita, that was launched in Japan in December 2011. The end of the year marked the worldwide release of the newest home console by Nintendo, the Wii U.
Document 6: Game Dev Story: Game Dev Story is a simulation video game developed and published by Kairosoft for Microsoft Windows, iOS, and Android. It was released for Windows in April of 1997 , for iOS and Android on October 9, 2010, and for Windows Phone on July 6, 2015. The game follows a player-controlled video game company and its attempts to expand into a sales powerhouse over time. As a simulation, the game and the direction of the company is controlled by the player, following a parallel timeline of the video game industry and its history. The game was released to positive reviews, with many reviewers focusing on "Game Dev Story"' s addictive aspects and its witty references to video game pop culture.
Document 7: 2008 in video gaming: 2008 has seen many sequels and prequels in video games. New intellectual properties include "Army of Two", "Dead Space", "Left 4 Dead", "LittleBigPlanet", "Mirror's Edge", "" and "Spore". Notable events of 2008 in video gaming. See also history of video games. The release dates listed in this article are the games' original release dates.
Document 8: Stardew Valley: Stardew Valley is an indie farming simulation role-playing video game developed by Eric "ConcernedApe" Barone and published by Chucklefish. The game was released for Microsoft Windows in February 2016, with ports for OS X, Linux, PlayStation 4 and Xbox One released later that year. A port for Nintendo Switch is also in development and is expected to be released in 2017. In "Stardew Valley", the player takes the role of a character that, to get away from the hustle of an office job, takes over their grandfather's dilapidated farm in a place known as Stardew Valley. The player manages their character's time and energy levels as they clear land, plant and tend crops, raise livestock, craft goods, mine for ores, and engage in social activities, including romances leading towards marriage, with the various residents of the small town, all while earning in-game money to expand their farm. The game is open-ended, allowing the player to take on activities as they see fit.
Document 9: Owlboy: Owlboy is a platform-adventure video game created by independent developer D-Pad Studio. The game is notable for its long development cycle, which began in 2007, and was released in November 2016.
Document 10: 2016 in video gaming: The year 2016 saw releases of numerous video games, including new installments for several well-received franchises, such as "Ace Attorney", "Battlefield", "Call of Duty", "Civilization", "", "Dark Souls", "Dead Rising", "Deus Ex", "Dishonored", "Doom", "Far Cry", "FIFA", "Final Fantasy", "Fire Emblem", "Forza Horizon", "Gears of War", "Hearts of Iron", "Hitman", "Homefront", "Homeworld", "Kirby", "Mafia", "Mario Party", "Master of Orion", "Metroid", "Mirror's Edge", "Persona", "", "Pokémon", "Ratchet & Clank", "Shadow of the Beast", "Shadow Warrior", "Sonic the Hedgehog", "Star Fox", "Star Ocean", "Street Fighter", "Titanfall", "Total War", "Uncharted", "Watch Dogs", "XCOM" and "Zero Escape". In addition, it saw the release of new intellectual properties, including "Overwatch", "Quantum Break", "Tom Clancy's The Division" and "The Last Guardian", and indie titles such as "Abzû", "Hyper Light Drifter", "Inside", "No Man's Sky", "Owlboy", "Stardew Valley" and "The Witness". Many awards went to games such as "Overwatch", "", "Inside", "Doom", "Dark Souls III", "The Last Guardian", "Dishonored 2" and "Titanfall 2".
Document 11: 2011 in video gaming: The year 2011 saw many new video games, as well the release of numerous sequels to critically acclaimed games, such as "Ace Combat", "Assassin's Creed", "", "Battlefield", "Call of Duty", "Call of Juarez", "Cities XL", "Crysis", "Dead Space", "Deus Ex", "Dragon Age", "Driver", "Duke Nukem", "Dynasty Warriors", "F.E.A.R", "Forza Motorsport", "Gears of War", "Infamous", "Killzone", "LittleBigPlanet", "Mario Kart", "Modern Combat", "Mortal Kombat", "MX vs. ATV", "Need for Speed", "Operation Flashpoint", "Pokémon", "Portal", "Rayman", "Red Faction", "", "Resistance", "Saints Row", "", "The Elder Scrolls", "The Legend of Zelda", "The Witcher", "Total War", "Tropico" and "Uncharted". In addition, it saw the release of many new intellectual properties, such as "Bastion", "Dark Souls", "Dead Island", "Homefront", "L.A. Noire", "Minecraft" and "Rage". Many awards went to games such as "", "Portal 2", "", "" and "". 2011 also marked the worldwide release of the Nintendo 3DS.
Document 12: Battlefield 1: Battlefield 1 is a first-person shooter video game developed by EA DICE and published by Electronic Arts. Despite its name, "Battlefield 1" is the fifteenth installment in the "Battlefield" series, and the first main entry in the series since "Battlefield 4". It was released worldwide for Microsoft Windows, PlayStation 4, and Xbox One on October 21, 2016.
Document 13: Video game development: Video game development is the process of creating a video game. The effort is undertaken by a game developer, which may range from a single person to an international team strewn across the globe. Traditional commercial PC and console games are normally funded by a publisher, and can take several years to reach completion. Indie games can take less time and can be produced at a lower cost by individuals and smaller developers. The independent game industry has seen a substantial rise in recent years with the growth of new online distribution systems, such as Steam and Uplay, as well as the mobile game market, such as for Android and iOS devices.
Document 14: Owl City: Owl City is an American electronica project created in 2007 in Owatonna, Minnesota; it is one of several projects by singer, songwriter and multi-instrumentalist Adam Young. Young created the project while experimenting with music in his parents' basement. Owl City developed a following on the social networking site MySpace, like many musicians who achieved success in the late 2000s, before signing with Universal Republic Records, now Republic Records, in 2008.
Document 15: Doom (2016 video game): Doom is a first-person shooter video game developed by id Software and published by Bethesda Softworks. A reboot of the "Doom" franchise, it is the fourth title in the main series and the first major installment since "Doom 3" in 2004. It was released worldwide on Microsoft Windows, PlayStation 4, and Xbox One on May 13, 2016 and is powered by id Tech 6. A port for Nintendo Switch developed by Panic Button is scheduled for release in Q4 2017.
ground_truth: Owlboy