I was introduced yesterday to this great type due to Eric Fox of f-puzzles, and decided to go ahead and add it to the puzz.link applet. Here’s one:

[puzz.link]

Rules Shade some cells, so that all shaded cells are connected by edge. Clues indicate the number of shaded cells in a room. There can’t be more than three shaded or unshaded cells in a row, i.e., no I-tetromino can fit fully inside the shaded or unshaded cells.