Finishing up our series of Sentinel freebies, we’re celebrating the announcement of Sentinel 4: Dark Star with a sale on its predecessor, Sentinel 3: Homeworld. The iOS version of Sentinel 3 is now FREE for the weekend, while the Google Play Android version is down to $0.99.

The biggest and best of the Sentinel series, Sentinel 3: Homeworld takes you out of the solar system to battle the alien menace on their home turf. Level up your Commander hero unit and battle through a massive 20 level campaign against old enemies and new threats. If you haven’t yet hit the Homeworld, now’s the time to grab it!