Help me find this puzzle game online

I love puzzle games and there was one that I played last year that IIRC was recommended by another Doper. I can’t remember the name of it or where to find it.

It was a very simple concept:

You had to manipulate a rectangular block (by flipping it from face to face) across a platform and make it fall through a square hole. On each level, the platform had a different shape and different obstacles in your path. If you made the wrong move, you could fall off (or through) the platform.

It was quite addicting and I’d love to play it again. Does anyone know the name of this game and where I can find it online?

Sounds like Bloxorz.

It also sounds similar to Blocks With Letters On, one of the best on-line puzzle games I’ve ever played. Starts simple, gets positively fiendish.

That’s it! Thank you!

And I’ll check the other one out, too, hammos1.