It's minesweeper, alright. The "adjacent squares" (I think ctrl+click in the original) button is missing, as well as the "?" option; the zeros add clutter, and monochrome numbers make it harder to understand the board quickly. Being able to click on spots already flagged is not ideal.
A "random start" that always chooses a 0 square would have been a big improvement. On the other hand, the leader board is a nice addition.
Sorry if that sounds harsh. I played a lot of minesweeper as a kid, so the differences really stood out to me. I did enjoy it, if you can't tell from the leader board.