Winter Wolves has released their first sci-fi visual novel/collectible card game hybrid: Planet Stronghold: Colonial Defense for Mac OS X, Windows and Linux.

Here’s how the game/novel is described: “Planet Stronghold: Colonial Defense brings you back in time in the early settlement days of the Planet Stronghold colony. By a bizarre coincidence, two captains, two siblings, get stuck in the same colony: Alex and Diana Nelson. Take control of one of them, and discover the mysteries and the dangers of Planet Stronghold, and the personalities of the various characters of your team.

“The game features a big card-collectible gameplay part, easy to learn but hard to master. Upgradable cards brings even more replayability, especially at higher difficulty levels. For those looking forward more to the story and visual novel/dating sim aspect, you can play the game in ‘Visual Novel Mode.”

Planet Stronghold: Colonial Defense it is available for Windows, Mac, and Linux. A version for mobile is planned later this year. The main game has a free demo available on the official website. Registration costs only $19.99. A separate version is also available with bonus content including the full original soundtrack in mp3, extra artwork and wallpapers.

The main game has a free demo available on the official website (http://winterwolves.com/pscd.htm). Registration is $19.99. A separate version is also available with bonus content including the full original soundtrack in MP3, extra artwork and wallpapers.