The Sonic the Hedgehog series features many incredible characters, but none are more iconic than the blue blur himself. Sonic is the mascot of Sega, and one of the most recognizable characters in all of the gaming sphere. From 1991 to the present, we’ve been blessed with numerous entries (over 30, in fact) that have only on occasion failed to deliver.

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A lesser known fact about the series is that there is an intended chronology to the events. Spanning the Classic, Adventure and Modern eras, little callbacks and connections render most games bearing Sonic's big blue face part of a broader canon. Here's every mainline title and where it slots into things.

Updated on November 7, 2024 by Bobby Mills: The Sonic series continues to grow, and it's an impressive feat that it's managed to maintain a (largely) consistent canon for three decades. While we recently added Superstars and Frontiers to our breakdown, the Sonic Team has kept the content flowing in the form of Shadow Generations, which means it's time for another update. Lace up your Power Sneakers!

To qualify for this list, a game must have been developed either entirely or in large part by Sonic Team. This means titles like Chronicles, Rush, Advance and so on will be excluded. The sole exception will be Sonic 4, as this is a numbered sequel to the Genesis classics.

25 Sonic The Hedgehog

Where It All Began

Launching in 1991 for the Sega Genesis, the original Sonic the Hedgehog was the launch title for what would become one of the most iconic game series of all time. It was intended to show off the console's 'blast processing,' which didn't actually mean anything in reality.

The game introduced us to Doctor Robotnik (who would later go on to adopt his original Japanese name, Eggman, in the West), an evil scientist who is Sonic’s arch-nemesis. Sonic 1 is short and sweet, rocking a paltry six zones; but also fairly tough, as Sonic did not yet have the ability to spindash.

24 Sonic The Hedgehog 2

Tails Joins The Fight

Sonic the Hedgehog 2

Platformer Released November 21, 1992 Developer(s) Sega Platform(s) Sega Genesis, Switch, 3DS, PC Genre(s) Platformer Powered by Expand Collapse

Sonic the Hedgehog 2 came out in 1992, hot on the heels of its smash-hit predecessor, and is commonly cited as one of the best platformers to speedrun because it gave Sonic the ability to spindash. It's instant speed in a can.

Sonic 2 remains a fan favorite because of its great level design and the introduction of Sonic’s best friend, Miles 'Tails' Prower.The two-tailed fox becomes a playable, albeit fairly useless, character if a second controller is plugged into the Sega Genesis.

23 Sonic CD

Trouble Keeps You Running Faster

Sonic CD is one of the lesser-known Sonic adventures because it was developed for the Sega CD, an add-on for the Genesis that allowed the console to play disc-based games. Much like the Sega 32X, which similarly bolted haphazardly onto the Genesis, it was a botched attempt to artificially elongate its shelf life.

As for the game itself? Launched in 1993, Sonic CD was ahead of its time, pun intended. The main conceit involves time travel, as you are able to move between the past and present to ensure a good future in each zone. It even introduced us to Metal Sonic, a mechanical stooge who's one of the more popular Sonic villains, and Sonic's longtime admirer Amy Rose.

22 Sonic Chaos

Bite-Sized Blast Processing

Sonic Chaos is the first title designed for the Game Gear, following 8-bit Master System versions of the original two mainline games. At the time, the title was considered to be a landmark achievement given the limitations of its platform. Those limitations being considerable, if you weren't aware.

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However, over time, people have come to realize that Sonic Chaos wasn't the greatest. Lackluster level design, a runtime that taps out under five hours, and a glacial frame rate haven't exactly endeared it to legions of newfound fans through the decades.

21 Sonic Spinball

Well, He's Basically A Pinball Already

Some may question our logic for placing what is ostensibly a pinball game alongside the rest of our picks for 'mainline Sonic the Hedgehog', and we get it, you persnickety lot – but look past the label here, and you'll soon find that Sonic Spinball is every bit the platformer of its peers. It just so happens to feature blatant pinball elements along the way.

Sonic Spinball is a clunky game, make no mistake. There's slowdown, there's much to criticise about the control scheme, and the difficulty spikes are oddly sharp. Sharper than that one pit in Mystic Cave Zone, even. Yet its dark soundtrack and moody atmosphere (and, to date, only canonical appearance of Sally Acorn and the Freedom Fighters) have granted it a permanent place in more than a few hearts.

20 Sonic The Hedgehog 3

Perfection Zone: Act 1

Shipping in 1994, Sonic The Hedgehog 3 is arguably the best game in the original trilogy. Or is it merely the first half of the best game in the original trilogy? Opinions differ — we'll explain more in a moment.

You could play the game solo as either Sonic or Tails, and even play with both to turn it into a (rudimentary) couch co-op game. Sonic 3 introduces us to Knuckles the Echidna, who becomes a new antagonist after stealing all of Sonic’s Chaos Emeralds before you even begin the first level. Gullible but good-hearted, he sees the light in time.

19 Sonic & Knuckles

Perfection Zone: Act 2

Sonic & Knuckles came out a few months after, and is the canon continuation of, Sonic 3. It was the first game to feature Knuckles as a playable character, as the title perhaps would imply.

Using the Sonic and Knuckles cartridge’s fancy 'lock-on' technology, you were able to stick Sonic the Hedgehog 3 on top of the cartridge to play 'Sonic 3 & Knuckles', the concoction that birthed a thousand memes. That’s the game Sega initially wanted to make before time constraints forced it to split Sonic the Hedgehog 3 and Sonic and Knuckles into separate titles.

18 Sonic The Hedgehog: Triple Trouble

Not Triple The Resolution

The sequel to Sonic Chaos, which is in itself something of a sequel to the Game Gear versions of Sonic 1 and 2, Triple Trouble is kind of the culmination of that portable branch of the franchise. It's a purely Game Gear affair, with a sturdier lasting legacy than Chaos. For one thing, it brought us Fang/Nack/Jet the Sniper/Wolf/Hunter/Weasel/Jerboa.

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In fact, Triple Trouble's relative decency helped spawn a fan campaign to recreate the game in a 16-bit visual style. It's worth looking into!

17 Sonic Mania

Givin' Me A Little Mania

Sonic Mania

Platformer Released August 15, 2017 Developer(s) PagodaWest Games, Headcannon Platform(s) PS4, Xbox One, Switch, PC Genre(s) Platformer Powered by Expand Collapse

Sonic Mania launched in 2017 and promptly pulled the rug out from critics and gamers alike who were poised to trash it. In fact, it quickly became the highest-rated Sonic game in 15 years, so palpable is its love for the pixel era.

It was a return to the side-scrolling days of Sonic, featuring some resuscitated iconic levels in Sonic history and a smattering of completely new ones. Sonic Mania Plus, an enhanced version of the game with bonus content including returning faces Mighty and Ray, came out a year later in 2018.

16 Sonic Superstars

"We Want The New Super Mario Bros. Audience"

Sonic Superstars

2D Platformer Released October 17, 2023 Developer(s) Sonic Team Platform(s) PC, PS5, PS4, Switch, Xbox Series X, Xbox Series S, Xbox One Genre(s) 2D, Platformer Powered by Expand Collapse

In an attempt to recapture the magic and nostalgia from the original trilogy of Sonic games, Sega published Sonic Superstars in 2023 to a mostly positive reception. The character designs look great, and there are plenty of creative ideas scattered throughout the game, but it struggles to ever reach the same heights as the games that inspired it. It suffers from a pervasive feeling of genericism.

One of the biggest disappointments with Sonic Superstars is that, despite its focus on multiplayer, there are no online options, so you must play through the campaign with someone in the same room as yourself. Likewise, the speedier sections are not well adapted to co-op, so the more competent players will be leaving their poor mates in the dust. There is a lot to like here, but there is also a ton of room for improvement.