Although every review or video that mentions it can run ps2 and gamecube. It can't. Also aethersx2 has been abandoned and is closed source. Also android sucks.
But so far its a really nice ps1 portable device. Usually I'd use my vita but I'm always worried about damaging it and they're not exactly in production so I wanted something more disposable with L2 and R2 buttons. Now i can play Abe's Odyssey/Exodus on the train :D
I do the same and download hundreds of games just to look at a big library and play each one for a few minutes for maximum nostalgia.
I've not heard of Einhander but it looks like something I'd enjoy. Atm I'm playing through all the tomb raiders and just did all the ps1 armored cores.
What's the best ps1 armored core?
Master of arena is my favourite and a really good followup to ac1. Project phantasma is just filler