For Dragonballs on Namek:
Note: Dragonballs of Namek are more powerful and much bigger than the ones on Earth. They also offer 3 wishes instead of one.
1. Must gather all seven Dragonballs.
2. Chant required in the Namek language.
3. Wishes must be said in the Namek language.
4. Only three wishes per summoning of Puronga (Eternal Dragon of Namek).
5. After the wishes are made, Puronga will disappear, the Dragonballs will turn to stone and scatter themselves; they will remain stone for 130 days.
6. Puronga cannot grant any wishes that are beyond the powers of the creator of the Dragonballs.
7. You can revive anyone multiple times, as long as he/she did not die of natural causes.
8. You can only revive one person per wish.
For the "NEW" Dragonballs on Earth:
Note: After the fusion between Piccilo and Kame, Shenlong was no more. Goku teleported and brought Dende to take the job as Kame, or God. He created his own Dragon Balls with the dragon figure made by Mr. Popo. He used the restrictions and rules which were used for the original Shenlong.
1. Must gather all seven Dragonballs.
2. Chant required (Come out, Shenlong, and grant my wish!).
3. Only two wishes per summoning of Shenlong.
4. a) After the wishes are made, Shenlong will disappear, the Dragonballs will turn to stone and scatter themselves; they will remain stone for one year.
b) If only one wish is made during the summon and the Dragonballs turn to stone, they will remain stone for four months, andthen Shenlong may be summoned again.
5. The Shenlong can’t grant any wishes that are beyond the powers of the creator of the Dragonballs.
6. You can revive anyone or any group of people who fit a certain criteria, if they did not die of natural causes.
7. If a person has been revived by Shenlong before, the person cannot be revived again.
For Black Star Dragonballs (Dragonball GT):
1. These Dragonballs are spread throughout the universe and are much harder to find.
2. If these Dragonballs are not returned to the planet on which the last wish was made, that planet will blow up in 1 year.