Ontario's gambling history has two distinct eras. From 1975 to the early 2000s, it was a government-lottery-and-casino monopoly: the Ontario Lottery Corporation formed in February 1975 (launching the Wintario draw game that April), Casino Windsor opened as Ontario's first casino in May 1994, and the province added Casino Rama (1996) and Casino Niagara (1996) before merging its lottery and casino arms into the Ontario Lottery and Gaming Corporation (OLG) in April 2000. The second era began on 4 April 2022, when Ontario launched Canada's first competitive, privately-operated regulated iGaming market through iGaming Ontario (iGO), a subsidiary of the Alcohol and Gaming Commission of Ontario (AGCO) — letting private operators compete for the first time rather than only playing through OLG's own platform. The result, per an Ipsos study reported in May 2026, is a channelisation rate of 91.1% (players using licensed platforms), up from a government estimate of roughly 70% unregulated activity before the 2022 launch. 19+.
1975: the Ontario Lottery Corporation
Ontario's provincial gambling apparatus began in February 1975, when the Ontario government created the Ontario Lottery Corporation (OLC) under the Ontario Lottery Corporation Act, 1975 — a lottery-only Crown corporation with proceeds initially directed, via the Ministry of Culture and Recreation, to physical fitness, sport and cultural/recreational programming. OLC's first game, Wintario, launched 3 April 1975 with its first draw on 15 May 1975, roughly five years after the 1969/1970 federal reform (see our national history guide) had made a provincial lottery corporation legally possible in the first place.
For nearly two decades, OLC's mandate stayed narrow — draw-style lottery games, not casinos. That changed with the creation of a separate Ontario Casino Corporation in the early 1990s to run the province's first land-based casino, which is the next major milestone.
1994–1996: Ontario's first casinos
Casino Windsor opened on 17 May 1994 in a renovated temporary facility at the Art Gallery of Windsor, becoming Ontario's first casino and, notably, the first casino in Canada structured as a public-private partnership. Its permanent, purpose-built resort on the former Windsor Market site opened later, on 29 July 1998; the property operates today as Caesars Windsor. Casino Windsor's location — directly across the river from Detroit — made it an early cross-border draw for American visitors, a dynamic that shaped how Ontario thought about casino gambling as tourism infrastructure rather than purely domestic entertainment.
Two more casinos followed in quick succession: Casino Rama opened 31 July 1996 on Chippewas of Rama First Nation land — Ontario's first First Nations commercial casino, jointly owned by the First Nation and OLG — and Casino Niagara opened 9 December 1996 on the former Maple Leaf Village site in Niagara Falls, originally intended as a temporary facility ahead of a larger resort casino later in the city. Together, these three openings established land-based casino gambling as a permanent fixture of Ontario's gambling landscape by the end of the 1990s.
2000: OLG formed, and 2022's iGaming break
In April 2000, the Ontario government merged the lottery-only Ontario Lottery Corporation with the Ontario Casino Corporation to form the Ontario Lottery and Gaming Corporation (OLG) — a single Crown corporation running both lottery draws and land-based casinos, which remained Ontario's gambling structure largely unchanged for the next two decades, aside from OLG later adding its own regulated online platform, PlayOLG.
The real structural break came on 4 April 2022, when Ontario launched Canada's first competitive, privately-operated regulated iGaming market. The legal mechanism is the same "conduct and manage" test used everywhere in Canada (see our national history guide): iGaming Ontario (iGO), created 6 July 2021 as a subsidiary/agent of the Alcohol and Gaming Commission of Ontario (AGCO), technically "conducts and manages" the market by executing binding operating agreements with each private operator, while AGCO handles registration and regulatory oversight. From launch day, any operator with a signed iGO agreement could legally offer real-money online casino games and sports betting to Ontario players — running alongside, not replacing, OLG's continuing monopoly over lottery draws, land-based casinos and PlayOLG.
2022–2026: what channelisation actually shows
Ontario is the best-documented case study in Canada for whether opening a market to competitive private operators actually pulls activity away from unregulated offshore sites. Before the 2022 launch, the Government of Ontario estimated that roughly 70% of the province's online gambling activity happened on unregulated (largely offshore) sites — a widely repeated government estimate, though we could not trace it to one specific named, dated study, so treat it as directional rather than a precise figure. An Ipsos study commissioned by iGaming Ontario and AGCO, fielded 30 March–20 April 2026 among 2,012 Ontarians aged 19 and over, found the picture had flipped: 91.1% of players surveyed used regulated, licensed platforms, with only 8.9% gambling exclusively on unregulated sites — down from a 16.3% unregulated share in the prior year's comparable survey.
The honest reading of that trajectory is that channelisation is slow and compounding, not an overnight effect of a launch date — it took Ontario roughly four years of operator competition, marketing and product investment to move from an estimated 70% unregulated to a measured 91.1% regulated. That's the benchmark Alberta's own 2026 launch will be measured against, and it's why we treat any claim of near-instant channelisation improvement in a newly launched province with real scepticism.
Frequently asked questions
When did Ontario legalise online gambling?
OLG had already run its own regulated online lottery/casino platform (PlayOLG) before 2022. What changed on 4 April 2022 was the opening of a competitive market: private operators could, for the first time, legally offer online casino games and sports betting to Ontario players under a signed agreement with iGaming Ontario, rather than only through OLG's own platform.
What was Ontario's first casino?
Casino Windsor, which opened 17 May 1994 in a temporary facility, was Ontario's first casino and one of Canada's first public-private-partnership casinos. Its permanent resort building opened in 1998; the property now operates as Caesars Windsor.
Has Ontario's 2022 iGaming launch actually reduced offshore gambling?
The best available evidence says yes, gradually: a government estimate of roughly 70% unregulated online gambling activity before the 2022 launch had fallen to an 8.9% unregulated share (91.1% channelised to licensed platforms) by an Ipsos study reported in May 2026 — a four-year trend, not an immediate switch.
Does OLG still run its own casinos and lottery draws alongside the private iGaming operators?
Yes. The 2022 iGaming launch added a competitive layer of privately-operated online casino and sports-betting brands on top of Ontario's existing gambling structure — it did not replace OLG. OLG continues to run Ontario's lottery draws, land-based casinos (including the former Casino Windsor, Casino Rama and Casino Niagara properties) and its own regulated online platform, PlayOLG, independently of the iGaming Ontario-licensed private operators.
Sources & further reading
Eitan Gorodetsky is the editorial reviewer behind Verdikt's guides for North America. He verifies every licence claim against the official registers, checks the real legality under Canadian provincial law and US state law, and never accepts payment for a better rating. Verdikt does not list or link offshore operators to US, Ontario or Alberta readers. 18+/19+ only (21+ in many US states) — gamble responsibly.