Go check out my review of the game in the reviews section here. I go into pretty good detail with the rules.

https://pinside.com/pinball/community/pinsiders/mbaumle/ratings/comments#rating-135337

In short, Robo-War has multiple strategies, stackable objectives, a player buildable jackpot, and crazy fast and difficult gameplay where every shot on the game has meaning. It’s *easily* the best game of the 3. It’s a fantastic tournament game as it’s got great balance.

TX-Sector is more about ripping the spinners for big points and teleporting the ball. It’s more gimmicky. I say this with utmost respect to TX though. I love the game too.