need to identify player and have saved his best from previous attempts, need some sort of file of players with their information
early in the game a start over button might be good so they can get the general idea, maybe a slowed version showing letters being pulled into the right place with some wrong ones being honked and zapped back to where they fell, and then pulled into the right place, we are dealing with a population that doesn't really know the alphabet and is too proud and fearful of being seen as stupid and shamed to ask for help, this is a population that is really good at giving up and covering it in rationalizations
I currently work in Unity and export to Android. This game can be done within this time limit. I would need more info, such as what information will be gathered from each player and how good the game will need to look.