I saw this advertised and thought what the Hell it would be something to do whilst the Brazil vs Japan match was on. The trip report =
Transferred £10 and played £10 worth of Bingo games, didn't win a thing.
Instantly got asked if I wanted a £20 Bingo Bonus and a £10 Games Bonus, I said yes to both.
I bought £20 of Bingo cards and again didn't win a thing.
You could only play slots with the Games bonus, that didn't last long either.
So the Net result was -£10.
I think obviously if one of the Bingo cards had actually won, and a few of the Full Houses were winning £70ish, then it would have been a profit. I was just picking cards randomly, sometimes it was 5p games sometimes 25p, it didnt seem to make much difference. Im not sure if I would do it again, it might, possibly, have been +EV and I was unlucky to hit absolutely nothing the whole session but im not convinced.