The list of compatible devices is available here
No. Your devices (smartphone and vidéo game device) must be connected to the same Wifi network so that they can communicate with each other. These data exchanges, necessary for the game to function, are carried out on your local network and do not pass over the internet.
These data are completely private.
No. At KaiKai, we consider that respect for privacy is paramount. We make games out of passion, and we only sell games!
It depends on the game; this piece of information is indicated on each game’s webpage. Our aim at KaiKai is to create user-friendly games, in which every player can have fun. That is the reason why in our games, the level of difficulty can be tailored to each player’s age.