Need help building a Specialized Tablet/ MP4 player

First of all, I have no experience in building a Tablet/ MP4 player. I wish to build a specialized Tablet/ MP4 player which only functions are:

- Runs 10 preinstalled games with touch screen and 10 videos (no other functions required)
- No wifi, bluetooth etc, no keyboard etc.

Which approach should i go considering Cost which is the main consideration, viability and work involved?

i) Android Tablet- Just be able to play those games and videos. If i use Android, should the job be easier to just create an app including all
those games and videos? Basically to just run one app for the Tablet. There is no plan for additional add ons/ download and i do not need all the other features.

ii) MP4 player- Will I be able to customize the look such as putting those 10 games and 10 videos into the home screen? The games will run in FLASH?
https://imgur.com/a/00muGqR

I hope experience people can help and guide me. Thank you.

 

How is this Unity related?