Let's take a look at how you get started. Sign up for a new account using the BetMGM Massachusetts bonus code BOOKIESFB200 which delivers $200 in bonus bets for college football or NFL. T&Cs apply.īetMGM Massachusetts Bonus Code: Bet $10, Get $200 Instantly 3 days to claim & 7 days to place a qualifying bet to receive 4x Free Bets: 1 x £10 Horse racing, 1 x £10 Free Bet Builder, 1 x £10 Acca and 1 x £10 Football.