He has:
AMD E-350 Processor 1.6 GHz
4GB Ram
Yes you can play
Maybe not at the highest resolution, but it works.
No.
With that you have at most 20 FPS. On average, however, more than 10 or even less. Completely unplayable.
No is too weak
No, at the very most slither.io…
No, unfortunately that is not possible. The components are very very old. You would get a maximum of 10 FPS with the lowest settings. The PC is not made for any other game like Tetris but nothing more