7 Worlds accordingly to Thirumoolar
M.P.Sathyavel MuruganEditor-in-cheif, Dheivamurasu says ::
The 7 worlds are 1. Boolokam 2. Bhuvalokam 3. Swargalokam
4. MAlokam 5. Thavalokam 6. Brahmalokam 7. Sivalokam
Herein, Thirumoolar chose to mention the above Seven Worlds in the intention of alluding to the travel places of a right Soul of ripe state, the spheres of different lokams one by one upwards leading upto the last and final world called Siva Lokam. There are further seven worlds going deep into abyss downwards. These are not to be construed herein for reason of context.