These are tiles for the Palago game. I tried playing with the "ordinary" tiles that Foosel designed (which I made laser cut versions from), however the tiles had a tendency to move about. So, I redesigned the tiles to have interlocking jigsaw connectors.
I added a case for the tiles. You need to print two of these cases, since each of them can "only" fit 24 tiles.
Should you want a 3D printable version, you'll find that here.
Should you want tiles without connectors, you'll find that here.