Blackwell 1-4 are on sale for $0.99 each. Want to catch up on the earlier adventures before embarking on the finale? You're in luck because the first four Blackwell games are on sale for just $0.99 each on iOS through February 18:

Blackwell 1: Legacy: https://itunes.apple.com/app/blackwe...cy/id886212870
Blackwell 2: Unbound: https://itunes.apple.com/app/blackwe...nd/id888936471
Blackwell 3: Convergence: https://itunes.apple.com/app/blackwe...ce/id887173166
Blackwell 4: Deception: https://itunes.apple.com/app/blackwe...on/id974092051