The second chapter of Aussie-made sci-fi puzzle/tactics game Ticket to Earth launches today on iOS.

Ticket to Earth is a sci-fi tale of betrayal and insurrection played out in a game that's a fusion of tile-matching, turn-based tactics, and story-driven RPG that has been extremely well-received so far.

The second chapter is a free update to the base game's NZ10 price tag, and picks up after the cliffhanger ending to episode one. It adds new enemies, locations and an additional playable character.

Developer Robot Circus has a total of four episodes in the works, and you can pick up the lot for NZ$18 on Steam, or NZ$10 on iOS.

An Android version is in the works, and the second chapter will hit the PC version later this year.

In a design post on Gamasutra, Robot Circus co-founder and technical director Kevin Chan said that with Ticket to Earth, Robot Circus was attempting to make a game that really mattered to people, that touched them deeply, and that made them think.

"As we discovered in creating Ticket to Earth, novelty can be found by mixing up styles and genres that have never been combined before, especially when those game types don’t intuitively fit together," he wrote.

"Sometimes originality lies in taking two or three very different styles of game and blending them into a seamless whole."