Hey there, I've picked Irodoku to play.
It plays like Sudoku as expected. Although using color is good idea, the way this game implements it is too much IMO. There are couple levels in which two colors are pretty similar to each other making it hard to distinguish them on the board.
I can see the idea of having various color theme for each level but IMO it is too much. I rather have just one theme like the one in level 2 and use it in all levels.
Also instead of "No match" message when player puts wrong color on wrong tile, why not say "Wrong color" instead?
Anyways, that's my feedback for Irodoku.
This is my game that I want you to play for feedbacks : Ruvor Rush.