30. Sonic Boom: Fire & Ice (3DS)

Sonic Boom: Fire & Ice is — rather like its predecessor — a solid effort and worth consideration if you're Sonic fan. The core campaign blends a variety of styles, with the main stages employing an enjoyable mix of exploration and puzzle solving with moments of satisfying momentum and speed. There are some slightly disappointing downsides, and it's a game that occasionally feels constrained rather than supported by its source material. Overall, however, it deserves credit for what it does well, and should certainly be tempting to fans of the show and also broader Sonic enthusiasts willing to accept its limitations.

29. Sonic Spinball (GG)

Sonic Spinball in itself is a pretty decent spin-off title that showcased reasonably decent visuals and gameplay for the Genesis, but the Game Gear version undoubtedly suffers from the necessary downgrades to get the game running competently. Gameplay feels clunky and the music is a bit of a mess. Still, it's not a terrible effort, all told.

28. Tails Adventure (GG)

Tails Adventure is definitely the odd game out in the Game Gear's Sonic lineup, but it makes a sound case for its unique identity. This is SEGA's very much friendlier take on the Metroidvania-lite formula — a fun adventure platformer with excellent level design, creative items and abilities, and some much-deserved time in the spotlight for Tails. For fans of the two-tailed fox, or adventure games in general, Tails Island is well worth exploring.

27. Sonic Spinball (MD)

Sonic Spinball was an attempt to expand on the pinball shenanigans of Spring Yard Zone and Casino Night Zone from the first two Sonic games and spin an entire game out of it. The premise had promise, and there are some neat ideas within, but unfortunately the result feels like a fusion of underwhelming pinball and bad platforming. We often wonder how this might have turned out had it used the silky smooth engine from the mainline games.

Available on various complications over the years, including on Switch with SEGA Mega Drive Classics and the Nintendo Switch Online Expansion Pack (and even Game Boy Advance via the Sega Smash Pack), Spinball's excellent music is reason enough to check it out if you're curious, and the bonus stages featuring Sonic standing at a pinball table with his reflection in the glass is still pretty rad.

26. Sonic Chaos (SMS)

Hardcore Sonic fans might get a kick out of Sonic Chaos, and it's not without charm, but compared to the greats it's a comparatively uninspired effort and far too easy for its own good. Some of the levels will only take you 30 seconds to run through and personally we'd stick to the previous 8-bit titles. Still, Chaos has its defenders and it's got some great box art, so it's not all bad.

25. Sonic the Hedgehog: Triple Trouble (GG)

As with all the Game Gear releases, it's easy to pick on Triple Trouble for its shortcomings when compared to the home console Sonic titles, but even bearing in mind the limitations of the hardware, the game still has its share of faults. The adventure itself is quite enjoyable and there are some solid level designs, but the lack of challenge and sluggish pacing end up bringing the overall experience down a few notches. Keep your expectations at a realistic level and you might have some fun, but this is far from essential Sonic.

24. Sonic Lost World (Wii U)

Superficially, this is Sonic's take on a Super Mario Galaxy-style adventure with cylindrical worlds and abstract delights. It's a long way behind Nintendo's masterpiece, but Sonic Lost World is still a clever, colourful platformer which offers flashes of genius and fun. You'll just have to put up with plenty of frustration to get at the really good stuff.

23. Sonic Unleashed (Wii)

It's the Sonic X Werewolf crossover everyone was gagging for! Yes, Sonic Team’s insistence on disrupting Sonic's flow with random gameplay elements from other genres continued with Sonic Unleashed, which turned everyone's favourite speed freak into a lumbering lupine oaf when night fell. It has its moments — as most Sonic games do — but throw in Wii waggle for the lacklustre brawler bits, and the result is yet another patchy entry in the 3D Sonic canon.

22. Sonic Frontiers (Switch)

Sonic Frontiers represents a brave new direction for the series, but it has proved a divisive one — by our estimations, this first ‘open-zone’ entry misses the mark by quite a margin. We found that traversal and combat annoyances plagued the experience from start to finish, while structurally the game offered up very little variety, instead leaning on repetitive fetch quests that get exasperating after the first island. As far as the Switch version goes, it’s quite comfortably the worst option available to fans, with graphical compromises that make it impossible to recommend if you're able to play it anywhere else at all.

We're not the biggest fans, then, but there are evidently plenty of people who did find Frontiers a satisfying Sonic experience.

21. Sonic Heroes (GCN)

Eschewing the more open approach of the Adventure games for more linear-style levels, Sonic Heroes gives you teams of characters to switch between including fan favourites Big the Cat, Rouge the Bat and Cream the rabbit alongside the classic trio of Sonic, Tails and Knuckles. It did an admirable job of replicating the feeling of the 2D Sonic games in three dimensions, and while it's not perfect, there's a lot to like about Sonic Heroes.

20. Sonic Colors Ultimate (Switch)

Sonic Colors Ultimate is a well-executed revisit of a high point in Sonic’s long career. Most of the quality here stems from the content of the original, rather than the new additions and tweaks for this re-release. Things like the Jade Ghost and extra customization options are welcome, but not game-changing, and the musical and graphical improvements are minimal. At the end of the day, though, this is still a well-performing, portable version of a classic and that’s arguably all that it needs to be. This is certainly the best and easiest way to try Sonic Colors out, although it definitely isn’t a massive overhaul of what came before.