A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
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Thanks for sharing the apk =). I've played it a little and everything seems to work perfectly (despite some minor bugs). Though, I didn't liked...
I am interested to make a 2D city builder game and I also already have some 2D sprites. I saw at the kit page that the buildings were some type of...