I've played all the way through twice so far, and wow! Artefact is really absorbing to play! It's a nice way to use mindfulness/meditation alongside random tables and imagination. The emotions I found bubbling up while I played were something to remember.
As well as all that, Artefact has helped me create some really original items to take afterwards into my Fighting Fantasy RPG. It's immensely satisfying to play with an item that's passed through multiple peoples' hands (and the tragedies or victories along the way). Much more enjoyable than simply adding a "+1 sword" to a character's inventory.
I can definitely recommend this!