First off: It astonishes me that this game has had such a long shelf life. I've been playing for years (prior to purchasing it on Steam), and the discussions board is still pretty active. Those who play it, generally keep playing it.
So, with a name like "Everyday Genius," it's pretty easy to be scared off; one could be forgiven for thinking this to be a hardcore math game. It isn't. It's more logic puzzle than anything else, although it remains unique. It is not like Sudoku, except that it uses numbers and the process of elimination to reach a solution.
Simply put, you're presented with a single grid (to start). Inside each grid is a series of puzzle boxes that contain different mathematical symbols along with the numbers 1 through 4 (I said math isn't really needed, and I didn't lie; keep reading). An equal sign (for example "4=") inside a box simply means the answer is the number 4. Two boxes reading "3+" means that the answer will be 3, and it is achieved by adding two numbers together (1+2). Like Sudoku (which this really isn't), numbers can only be used once in each row or column. Each puzzle within the grid can be several boxes, and they are painted the same color so that you know they are one puzzle (for example, 1x2x3=6, might all be painted green). You get the idea.
What keeps it from being less math and more logic is that mousing over any box will automatically show you all possible combinations for the solution. As you solve more puzzles inside each grid, these possible solutions will also change, due to process of elimination. Eliminated numbers will automatically disappear from each puzzle, and you can also manually remove them by right-clicking. Because of this, it really is possible to solve each grid without much math skill.
The variety offered here is stunning. You will use greater than and less than symbols; straights (3,4,5,6, etc); even / odd numbers; multiplication and division; and more. The real creativity comes when boxes arrive unpainted, leaving you
to color them in with the correct colors. Color them incorrectly, and you'll be solving puzzles that don't exist, meaning your entire grid will be incorrect! Some times, you may have puzzles without any equations; other times, an entire 9x9 grid may consist of nothing but less than or greater than symbols
! The difficulty level amps up until you are solving two grids simultaneously, with factors up to 9.
There is no time limit, the colors are vibrant, and the music that is here is soothing and ambient. It's casual puzzle solving at its best. There is truly nothing else like it, and it remains a classic...for those of us who actually know about it. Some people, like myself, are still playing it years later, and you'll not solve the 20,000 included puzzles (not randomly generated, by the way) any time soon. Even better, it can be played with one hand, for those times when my grandson falls asleep on my lap!
At less than $5 US, there is not a single puzzle game on Steam that offers this much game time per penny. Highly, highly