The environment for the puzzles is the map of a house. The rooms have variable sizes, and many doors.
Each puzzle has a unique solution, as every good logic puzzle should.
Note that in the above puzzle every room has doors in every possible position. It is beautifully elegant that the solution is determined only by the room layout and not by the exclusion of some doors. This only happens in a few puzzles, however; in most cases, some doors (but remarkably few) had to be removed to make the solution unique.
The basics of the user interface are good enough: swipe through a door to make the path pass through it. If you made a mistake, tap the path to remove it.
When you determine that the path cannot pass through a door, you can tap the door to keep note of your deduction. However, visually the door turns into a solid wall: that is, there is no visible difference between a real wall (one that was there at the beginning of the puzzle) and a door-turned-into-wall.
There are 10 grid sizes, from 6x4 to 12x12, and two slightly different difficulty settings for each.
The larger puzzles look like this:
The rest of the user interface is pretty confusing and overcomplicated, and is in desperate need of a radical redesign. Just consider that the More button at the bottom cycles through two more lists of buttons, and the Options screen looks like this:
Normally when I solve a logic puzzle I try to make strict deductions for every move, which means that when the solution is eventually found, I have also proven that it's unique. In this game, however, I found some of the puzzles hard enough that I often took advantage of the knowledge that the solution is unique. For example, in the following puzzle look at the room with a red dot.
There's not one, but four differemt versions of this game on the App Store. The only difference is the number of puzzles they include.
Willa's Walk FREE: 40 puzzles (free)
Willa's Walk PRO: 600 puzzles ($0.99)
Willa's Walk ULTRA: 7500 puzzles ($3.99)
Willa's Walk ZEN: 15000 puzzles ($5.99)
Definitely try this game, with all the flaws in its user interface, because the puzzle mechanics are great. They would deserve a more enjoyable implementation.
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