My six year old can play this
There are actually three levels of play: easy, normal, and hard. Both my six and eight year old play this game. It is truly engaging and you can set multiple players that the game remembers with each play. The game does give hints. At the top middle of the screen, it has a light bulb icon that shows the next "rule" the player should employ. It does not give the answers though and on the hardest level, I have been stumped for quite awhile. The graphics are very good on IDevices. No violence except for the monster fights at the end of the levels, but it's the army people jumping at the monsters with a spray of green sparks. No weapons.