No, they were not PC-compatible. It should connect to any box-Amiga though, with or without an adapter.
The interesting thing about this keyboard (for many) is that it was made by Cherry. It has Cherry MX key switches and thick doubleshot ABS keycaps.
There were other keyboards for the Amiga 2000 that had Space Invaders, but most of them had Mitsumi "hybrid" switches with rubber-dome feel.