Here is a good offer :i have already tested it and it's 30€ for free in casino 770 casino and instantly credited (member of partouche casino group).
All the site is in french
Go at : http://www.casino770.com
Click on "s'inscrire"
Fill the suscribtion formular
Arrow Identifiant/Login de votre parrain : mamansasu
Code promotionnel : BON JEU (bonus code to enter )
Valid your suscribtion
Then click "Version Classique"
then click sur "DEPOSER"(=deposit)
Dans "Dépôt par cetificat" (=deposit via free bonus code ), fill 20-770-20-770
Deposit again with the code TJ20EUROS
You will have 30€ in your account instantly Smile
I don't know the rollover requirement, but seems that a 5* playthrough is required