I believe this is a misunderstand,
"Tile Kingdom" is familiar to "Mini Kingdom" because we both learn the base rules from kingdomino.
But the core rule in "Tile Kingdom" is the "close area" rule, you have to close the areas to get a high score.
There is nothing to do with "close area" rule in "Mini Kingdom".
This rule make two games totally different, no matter the gameplay or the strategy when you play it.
Please play the game, and you will know the differences.