There are certain numbers in certain sizes that you don't have to guess it. For instance, look at any row that adds up to the number of spaces less than the number of squares in the row. For instance, in a 10X10 puzzle, look for two numbers that would add up to 9 (one space), three that add up to 8 (two spaces), four that add up to 7 (three spaces), etc. Also, look for any single numbers that are greater than half the size of the puzzle grid. Look at all possible places it could go, and find the squares that they all overlap. You can know for sure that those squares will be occupied, and you can fill them in in order to try and fill in the perpendicular rows with which those squares intersect. There's a lot less guesswork involved than you might think.
Made it to level 49 before I got stuck. Hell of a place to lose it... >_>
Good game though, and the addition of the numbers, yellow squares, and multiple green squares made it a great improvement upon the original.
Wanna hear my strategy? I nearly got the impossible badge with it, but I accidentally clicked an outside link and lost that game...
1) Pick Parasite. It doesn't matter where you start. 2) Keep whatever symptom it gives you. Buy heat, cold, and drug resistances, lvl. 1 only. (It may take a while to get the points to afford it, but don't worry.)
3) Again, when you get the points, buy airborne and waterborne transmission. 4) When you get 19 points plus however many are necessary to sell your current symptom, do so, then buy the next level of symptoms and get pulmonary edema. 5) Wait until the world is infected. 6) Once you've infected every country, kill them all.
Now remember, this won't work right away either, but it has worked before. Just be patient. At least you won't have to restart over and over until your starting region is South Africa or Madagascar, right?
I liked it. Could've used more levels, I think, but very entertaining. I'm a big fan of the RagDoll games. I found it especially funny to collide two stick men. 4/5