InnoSpark Inc (Korean: 이노스파크) was a mobile game development company founded in April 2012 by key members of the team who created Rule the Sky, published by JCE.

[2] From February 27, 2015, InnoSpark started directly servicing Dragon Friends in South Korea and 175 other countries.

[citation needed] It also released Hero Sky: Epic Guild Wars.

[3] InnoSpark was expected to use the funding to continue developing games and enter the Chinese market.

히어로스카이 ) is a strategic game somewhat similar to Clash of Clans, but with an additional complex Hero System.