Attacking algorithm
Everything is great about this game except one and that is You can attack anyone the higher level player can sink lower level boat there should some condition something like you can’t attack lower level player at least up-to two level lower otherwise this game will never have new players and eventually those who are still playing will get frustrated after getting sinked by higher level players multiple times and stop playing this game. So if there will be restrictions for attacking lower level player up-to two level then I think it will last longer.