Question: When was the game released for which Hello Games Ltd are best known for?

Context articles: YoYo Games
You Must Build a Boat
Joe Danger 2: The Movie
Phoenix Dynasty Online
Dreamloop Games
Romero Games Ltd.
Illyriad
Hidato
No Man's Sky
Hello Games

YoYo Games Ltd. is a software and game publishing company based in Dundee, Scotland.
 It is best known for developing the proprietary, game development IDE, for Windows which can compile cross-platform, originally created by Mark Overmars.
 On 16 February 2015 the company announced that it had been purchased by Playtech for £10.65 million (16.4 million USD).
You Must Build a Boat is a hybrid puzzle-role-playing game developed by Luca Redwood under the developer name EightyEight Games LTD.
 It is a sequel to Redwood's previous game, "10000000", and was released for Microsoft Windows, OS X, Android and iOS devices on 4 June 2015.
Joe Danger 2: The Movie is a racing and platform video game developed by Hello Games for the PlayStation 3, Xbox 360, PlayStation Vita and Microsoft Windows.
 According to Hello Games's managing director, it is "kind of" a sequel to the successful "Joe Danger".
 The game was announced in August 2011 and released for Xbox Live Arcade on 14 September 2012, and 9 October 2012 for PlayStation Network.
Phoenix Dynasty Online (Chinese: 凤舞天骄, commonly abbreviated as PDO) was a fantasy MMORPG developed by Object Software Limited.
 It was first released in Mainland China in 2006.
 And then Ingle Games Ltd., the North American Publisher of Phoenix Dynasty Online, announced its Closed Beta on Aug 1st.
 The Open Beta test began on Oct 9, 2007.
 It was soon recognized by IGN and released its vault and granted IGN an interview.
 Until now the game is still under development and new contents have been added continuously.
 The upcoming 7400 expansion pack is scheduled for July 2009.
 Phoenix Dynasty Online is set in ancient China.
 Players can learn and practice the Chinese Kungfu to advance their character and rule the dynasty.
Dreamloop Games Ltd., known as Dreamloop, is a Finnish video game developer based in Tampere, Finland.
 The company was founded in August 2014 by current Chief Executive Officer Joni Lappalainen, current Chief Technical Officer Hannes Väisänen, and current Chief Marketing Officer/Creative Director Steve Stewart.
 All three founders previously worked together at Fragment Production, where Stewart served as Marketing Director.
 Dreamloop currently employs 8 people, and is led by its co-founders.
 In late 2015 Dreamloop began actively campaigning to reform Finnish laws surrounding Crowdfunding.
 In 2015 Dreamloop launched a Kickstarter campaign to finance production of their upcoming game Challengers of Khalea, but funding was unsuccessful.
Romero Games Ltd. is an independent game studio that was established on August 11, 2015 by John Romero along with Brenda Romero and is located in Galway, Ireland.
 This is the ninth game studio Romero has established in his career, and currently it has released one title while three more are in development.
Illyriad is a free to play massively multiplayer online persistent browser-based strategy game developed by the UK software company Illyriad Games Ltd, the company's first full online strategy game, first released in beta in 2010, and launched in 2011.
Hidato (Hebrew: חידאתו‎ ‎ , originating from the Hebrew word "Hida" = Riddle), also known as "Hidoku", is a logic puzzle game invented by Dr. Gyora M. Benedek, an Israeli mathematician.
 The goal of Hidato is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally.
 The name Hidato is a registered trademark of Doo-Bee Toys and Games LTD, a company co-founded by Benebek himself.
 Some publishers use different names for this puzzle such as Number Snake, Snakepit (both of which play on the game's similarity in concept to the video game "Snake"), Jadium or Numbrix.
No Man's Sky is an action-adventure survival video game developed and published by the indie studio Hello Games for PlayStation 4 and Microsoft Windows.
 It was released worldwide in August 2016.
 The gameplay of "No Man's Sky" is built on four pillars: exploration, survival, combat, and trading.
 Players are free to perform within the entirety of a procedurally generated deterministic open universe, which includes over 18 quintillion (1.8×10 ) planets, many with their own sets of flora and fauna.
Hello Games Ltd is a British video game developer and publisher based in Guildford, England, who are best known for the science fiction adventure game "No Man's Sky".