MHA Nation expands 4 Bears Casino with new sportsbook and second property

The Mandan, Hidatsa and Arikara Nation is reshaping its gaming footprint on the Fort Berthold Reservation, pairing a new retail sportsbook at its flagship 4 Bears Casino & Lodge with a hotel tower under construction and plans for a second gaming property. Taken together, the moves mark one of the more ambitious tribal gaming expansions in the Northern Plains, in a state that rarely features in national tribal gaming coverage.

At the center of the sports-betting piece is a multi-year agreement with technology supplier Kambi to run on-property wagering at 4 Bears, which sits in New Town along the shore of Lake Sakakawea. The deal replaces the casino's previous third-party sportsbook provider with a suite of self-service kiosks, over-the-counter terminals, and bring-your-own-device functionality, and it carries a stated path toward on-premise mobile wagering and, potentially, broader statewide operation should regulatory conditions allow.

A flagship property gets bigger

4 Bears Casino & Lodge is the economic anchor for the MHA Nation, also known as the Three Affiliated Tribes. The property has been expanding in recent years with an added events center and a new hotel tower now under construction, and tribal leaders are advancing plans for a second casino, to be known as Son of Star. The buildout reflects a familiar pattern across Indian Country: reinvesting gaming revenue into hospitality capacity that keeps visitors on-site longer and diversifies the operation beyond the slot floor.

For a reservation economy, that reinvestment carries weight well beyond the gaming floor. Net revenue from tribal gaming is restricted under federal law to a defined set of governmental and community purposes, a structure that channels casino proceeds into tribal services and infrastructure rather than private hands. Readers new to that framework can start with our Legal Guide to IGRA and Class III gaming.

Location shapes the strategy. New Town sits on Lake Sakakawea, the vast reservoir behind the Garrison Dam and a regional draw for boating, fishing, and tourism, while the surrounding Bakken region has cycled through energy-driven booms that bring transient workers and disposable income. A hotel tower and an events center let 4 Bears capture more of that traffic, turning day visitors into overnight guests and giving the property a reason to compete for conferences and entertainment bookings that would otherwise leave the reservation.

Sports betting comes to Fort Berthold

The Kambi partnership is notable less for its size than for what it represents. Most tribal sportsbooks in the United States remain retail operations anchored to the casino floor, especially in states without a statewide mobile market. North Dakota fits that mold, and the MHA Nation's investment shows how mid-market tribes are adopting the same sportsbook technology stack used by far larger operators, scaled to fit their properties and compacts.

The headline numbers in tribal gaming come from California, Florida, and Oklahoma. But the growth at the edges — in places like North Dakota and Alaska — is where the industry's next chapter is being written.

Whether on-property mobile follows depends on regulatory conditions the agreement explicitly leaves open. The distinction between a retail sportsbook and a true mobile market is more than cosmetic; it determines how, and where, bettors can place wagers, and it sits at the heart of the so-called hub-and-spoke models that have spread in other states. We unpack that architecture in our explainer on the hub-and-spoke tribal sports betting model.

What it signals for emerging tribal markets

The MHA Nation expansion lands at a moment when tribal gaming nationally is setting revenue records, even as that growth concentrates heavily in a handful of mature markets. Emerging operations like 4 Bears start from a smaller base, but they illustrate how the industry's footprint keeps widening into states and regions that have historically punched below their weight. The economic stakes for the communities involved are detailed in our 2025 economic impact report.

The planned Son of Star Casino is the clearest signal of ambition. A second property diversifies the Nation's gaming revenue across more than one site, spreads risk, and extends the operation's reach to a different pocket of the reservation and its visitors. For tribes operating in lower-population states, multiplying modest properties can be a more durable strategy than betting everything on a single mega-resort that the local market may not support.

For the Three Affiliated Tribes, the calculus is local: a larger flagship, a modern sportsbook, a second property on the way, and a hotel tower meant to capture more of the visitors drawn to Lake Sakakawea. None of it will move national revenue figures on its own. But it is a clear statement that the MHA Nation intends to be a more substantial player, and a reminder that tribal gaming's center of gravity, while still anchored in the big markets, continues to spread outward along the map.