Machine Games (of Game of War fame) made a gacha called Crystalborne. It was kind of like a "city builder with no building". There was a map with territory to capture, and a lot of emphasis was put on it, but it was all turn based combat and guilds would fight over territory.

It wasn't great or anything but I did get in fairly deep.

But a couple of months in a couple of the people in our guild "confirmed with our man on the inside(lol)" that the game was "rugpull" and to stop playing.

But he was right. I saw the packs go up to insane amounts of money $300+ and impossible challenges start appearing and then the game just disappeared.

Just a unique experience.