Play Rootwell • Free

The levels are grouped into Topsoil, Clay Beds, Gravel Run, Deep Stone and Spring Line, ten in each. Boards grow from 7 by 10 cells to 9 by 16, with more stone, more water and less spare energy as you go.

The first levels each bring in one idea at a time: plain soil and stones, then clay, gravel, hidden water and finally mineral nodes. A short note at the start of those levels says what is new.

Clearing a level unlocks the next. The level select shows the stars you have on every level, and Continue on the title screen takes you to the next one to clear.

Each level was built around a route to the spring that was played through with the game's own rules before the level was kept, so none of them are impossible.

Par is the most energy the level can be finished with, found by a solver that tried every way through. On almost every level the solver searched them all, so par is the best result possible; on the rest it is the best it found, and the game will tell you if you beat it.

There is no timer and nothing moves until you do. Undo is unlimited and free, so trying an idea and taking it back is part of the game.

Watch the plant above the ground: it grows taller and leafier the deeper your roots reach, and flowers when the water arrives.

Your stars and best result on each level, your sound setting and whether you have seen the how-to are saved on Unihfy Games in this browser.

Your score here is your total number of stars, out of 150.