Sonic the Hedgehog series has sold over 1.66 Billion units & downloads

If there is one thing that Sega has been known for is the Sonic the Hedgehog series since it debuted in 1991 and since then the series has continued to grow

Sonic the Hedgehog surpasses one billion units and downloads sold in fiscal year 2020 - Tails' Channel

Sonic the Hedgehog Lifetime Sales Hit One Billion Copies Sold

Sonic The Hedgehog Franchise Sells Over 1.66 Billion Units Worldwide

Sonic Series Sells Over 1 Million Units from April to June 2023 - Games - Sonic Stadium

Sonic the Hedgehog Series Tops 1.5 Billion in Sales and Downloads

Fiscal year 2023 was the best for Sega Sammy in the last decade

Sonic the Hedgehog 2006 returns to the Xbox 360 Marketplace, and this is probably the reason why… » SEGAbits - #1 Source for SEGA News

Sonic Franchise On A High As Series Shifts 1.6 Billion Units as of 2023 - Games - Sonic Stadium

Sonic the Hedgehog franchise tops 1.5 billion units sold and downloads, remains at center of Sega's IP strategy

Sonic The Hedgehog Franchise Passes 1.5 Billion Units - Gameranx

The Persona series has sold approximately 17.7 million units

Sonic the Hedgehog Video Game Character Million Dollar Novelty Money

Sonic Franchise On A High As Series Shifts 1.6 Billion Units as of 2023 - Sonic News - Sonic Stadium

Sega Fiscal Report Confirms That Sonic The Hedgehog Sales Are Up By 220 Million Units From Last Year