Three for me. Once on PC (when it was the first action RPG I’d ever played), once on Xbox (for which I even bought all the DLC, even the cosmetic stuff), and finally the Legendary edition on PS4 (which gave me the extra FPS to be able to complete it on Insanity)
Just twice for me: On PC, I bought the Mass Effect Trilogy boxset and was upset when I learnt that it doesn’t contain all the DLC (most of the big DLC for ME2 and ME3 are missing) and later I bought Legendary Edition on my Xbox Series S. I also bought Andromeda between them.
Realising I never bought Andromeda. Just played it as part of an EA Access thing, and once was enough (a shocking thing for me to think about a Mass Effect game). It’s okay, but I think I enjoyed Dunky ripping on it more.