So, I've played a handful of game so far with the Open War cards, and they are a lot of fun! You never really know what to expect with the cards, so it definitely requires a flexible list.
If folks don't know what it is, the open war cards are a way to set up more casual/narrative games. There are a few decks of cards you draw from. Deployment, Objective, Twist and then ruses/sudden death.
So, each game will have a different combination of deployment styles (some are pretty wacky and fun, and the others are old favourites), the objectives are anywhere from objective grabbing to assassinating VIP's (kill point missions award points based on killed units Power Level, which is nice to see).
Twists, add something extra to the game to spice things up. Warp Flux, Acid Rain, Debris falling from the sky. All add extra challenges or change the way the game might play, but are not too complicated to bog things down.
If one player has a lower Power Rating for their army, they can get a Ruse which is a one time use ability to give them a small edge.
Overall, it's been a blast and has been an enjoyable alternative to standard book missions.
Anyone else been using them?