As of my last update in early 2023, betting in Massachusetts is legal under certain conditions. Here’s a brief overview:

**Sports Betting:**

In March 2021, Massachusetts lawmakers passed a bill legalizing sports betting. The law allows for both retail and online sports betting. The Massachusetts Gaming Commission is responsible for regulating sports betting in the state. Online sports betting platforms and brick-and-mortar casinos that have been granted licenses can offer sports betting services to individuals aged 21 and older.

**Casino Gambling:**

There are also retail casinos in Massachusetts, which offer traditional casino games like slots, poker, blackjack, and roulette. These casinos are also regulated and individuals must be 21 years of age or older to participate in casino gambling.

**Other Forms of Betting:**

Other forms of betting, such as fantasy sports, are also legal in Massachusetts. Daily fantasy sports contests have been legal in the state since 2016.

It’s important to note that the laws and regulations regarding betting can change, and there may be specific details and restrictions that apply. For the most current information, you should check with the Massachusetts Gaming Commission or refer to the latest state laws. Additionally, always ensure that you are using licensed and legal platforms when engaging in any form of betting in Massachusetts.