Avoiding the reddit like pessimism and cynicism of the other comment...
This is an fpga recreation of the turbo duo. It's capable of playing original pc engine, turbografix16 games, as well as cd games and the six (Six!) Super graphics games.
Why does fpga matter? It means the games run as close to as they were at launch, including the as close to zero lag as possible for a modern display (and actually zero ms lag when it has dac support).
If you don't have any original tg/pce games, then this likely isn't something you will care about. If you do, this is likely going to be the best way to play your game collection for the foreseeable.