In 2009 Origin8 released Sentinel, a sci fi Tower Defense game. The app and its following two installments (Sentinel 2: Earth Defense & Sentinel 3: Homeworld) have been consistently highly rated and reviewed. Fans of the series can now rejoice as Sentinel 4: Dark Star has been submitted to Apple for approval.
Sentinel 4: Dark Star will offer players a new campaign with 26 unique maps, an endless mode, new enemies, a huge array of weapons including Uber towers, and the new improved Stronghold. You will also have access to Commander heroes that can earn experience and level-up. As you win you can upload your score to the Global Nexus, which rewards you for furthering the worldwide cooperative push. Origin8 has also retooled the game's tech to include real-time dynamic lighting and shader effects to give the game atmosphere.
While there is no set release date yet for Sentinel 4: Dark Star, fans take heart as it will not be long now.