Most are around 95%, avoid anything less. The National Lottery ones list a decimal odds for the smallest prize, but you need to look at RTP percentage on these and online slots. The Monopoly one seems to be the best as it tended to pay back the 'bet'' (that's what it is really) every other time or so, but you may break even over time you may not.
She wasn't particularly bothered as sees it as contributing to good causes (or Canadian pension funds as some will no doubt say). £100 from £3, but realised over time she was actualy losing net.
I don't think their games are worth it at the end of the day, my Mum spent a while playing them and had some decent wins eg. Summarising a bit as I lost what I'd typed.
