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![](https://lemmy.world/pictrs/image/2665e448-91d9-484d-919d-113c9715fc79.png)
I thought this too, but unfortunately in terms of modding and general use they are very limited, afaik. When I looked into it, it boiled down to: There’s an sdk to develop stuff for it and you can get root access but good luck trying to replace the os or anything like that. That being said, this is what I remember from ~2 years ago, so if it can be customised more now, please let me know. I kinda bought 2 in hopes of being able to do that :D
It seems to be more for if you actually want something that makes use of the screen and gamepad input and then you can launch it from the UI.
https://github.com/ValveSoftware/steamlink-sdk