I have been a fan of Sid Meier since I started playing videogames. The first of his games which I enjoyed was Pirates! back in 1988/89. The next one I picked up was Railroad Tycoon before Civilization came into the picture.
Over the years, there had been many iteration of the classic game. In 2015, the sixth installment of Civilization came to the market and it was a surprise that a year later a working iPad version of the game was available. And I wasn't talking about a watered down version of the game a la Civilization Revolution. It was a full on version and since it was hard on the processing power, it took some time to get used to the slower phase of the portable game.
But on the whole, I was impressed. I was able to play the standard-sized world game at a steady pace in my iPad Pro and had not missed any of the features available on my Mac. Even the sound and atmosphere were comparable. I only wished that I had more time to kill playing that game.
Highly recommended. Yes, it drained the battery somewhat and it was not available on the iPhone - maybe due to the resources needed. A great effort and hopefully it would open the door to more desktop-level game onto the iPad.