Which website contain the list of free games for children?

Many games I found on the internet contain violence and not suitable for children.

I want to find a website which have the list of completely free games (not trial version) for children and including the following types of games:
1. Free offline games for children
2. Free MMORPG online games for children.

The list of free games in the website must include third-party free games not developed by the owner of the website.

The free games must completely free, not trial version.