A Worthwhile Addition.
I may be getting all teary-eyed and nostalgic, but I remember playing Red Remover when it came out. Blue, green, red- triangles, squares, circles- it all seemed so novel! Now, in the "new" iteration of the game, I think players will still find the same thrills, but it's no secret that a little bit of the novelty has worn off.
However, it's just that: a little bit. The game is still a masterpiece. You've done a heck of a lot with such a self-imposed visual limit. Nothing ever seems cluttered, and the game never chokes on itself. If there's one thing that makes a game unplayable for me, it's lag. Keeping the game clean and streamlined works wonders in your favor.
The gameplay is still novel. I think this kind of Jenga-inspired game really has a niche in the casual gaming community. The little bits that were added to the game attest to that. It's pulled an amount of longevity that most authors would be quick to envy.
I especially enjoy the game's sound effects. The crisp popping when you remove a block is incredibly satisfying, and the "Yeah!" byte that plays upon success is adorable and encouraging.
All in all, I think this is a decent expansion of a fantastic game. I can't give it 10 stars, simply because I don't think there's enough new material or features, but this definitely earns a respectable score in my book.