@lolamoth Your initial assumption is incorrect. I rewrote it: The rule is that the value of the remaining tiles at the end is subtracted from their Move Score and added to the Move Score of the player who emptied their rack on the last play regardless of who wins.
And part of the strategy at the end can involve what tiles you'll be left with if the other plays out first.
I also totally agree with the idea of creating a Spanish version of Lexulous. This would not only broaden the game's audience but also greatly increase its educational value, especially for Spanish learners. I hope the developers will consider this suggestion.
Your idea of adding 20 extra tiles to the 4-player game of Lexulous seems interesting and could add some extra excitement to the end game. Lexulous has 89 tiles, and it's different from traditional Scrabble. Would Lexulous consider such a change?