Here are the top 10 land-based casinos with the most number of slot machines in 2021:
1. WinStar World Casino and Resort – Thackerville, Oklahoma, USA
2. The Venetian Las Vegas – Las Vegas, Nevada, USA
3. Foxwoods Resort Casino – Mashantucket, Connecticut, USA
4. Mohegan Sun – Uncasville, Connecticut, USA
5. Casino Lisboa – Lisbon, Portugal
6. Rio Casino Resort – Klerksdorp, South Africa
7. Borgata Hotel Casino & Spa – Atlantic City, New Jersey, USA
8. Resorts World Casino, New York City – Jamaica, New York, USA
9. San Manuel Indian Bingo and Casino – Highland, California, USA
10. Casino de Montréal – Montreal, Quebec, Canada
Please note that the rankings might vary depending on the year and the source of information.