The djinn develop their abilities over the course of 13 levels; beginning with +2 to Dex and Int, fly speed 30 feet (perfect), and darkvision as racial traits. At L1, they possess a limited telepathy.
The efreet develop their abilities over the course of 19 levels; beginning with +2 to Str and Con, and darkvision as racial traits. At L1, they possess a limited telepathy and a slam attack.
The jann develop their abilities over the course of 11 levels; beginning with +2 to Dex and Con, elemental endurance, and darkvision as racial traits. At L1, they can enlarge/reduce twice a day.