The games do not collect any personal data. The device access is limited to the memory of the device and the query if there is an internet connection. What these things are needed for is explained in the individual subitems.
The program/game needs the memory access to create and load memory data. The program/game only accesses its own memory data.
Since Android programs/games are supposed to be financed by advertising, it is checked whether it is possible to connect to the Internet. The internet connection is needed to load advertisements that will finance the program/game.