Exactly! that was the first game, it was actually called "antz" i think, then another guy made a castle version in flash and now i've remade it again but in html/js.
As for floating issue, yeah... I don't like that either but it's easier for having it on all platforms, phones, desktops, etc. I'll try to make some land line for where the castles should be and play with background a bit.
Having to hold for selecting is just one way to select, you can also swipe up (if on phone/tablet) or click on the icon in the top right.
Huge thanks for review and playing the game :)
Let me know if i can return the favor