Jet Set Radio, Chu Chu Rocket

HEY HEY HEY! Come on over and have some fun with CRAZY TAXI!

Persona is owned by SEGA so that probably counts

The Shinobi series has always been a good time.

Yakuza

Comix Zone

Super Monkey Ball

Toe Jam and Earl 1 and 2. That’s right, I like 2!

Space Channel 5

Chu chu chu, baby 😉

I always liked the House of the Dead series.

OutRun series, especially OutRunners and OutRun 2.

Jet Set Radio Future.

Most people would consider it completely outclassed by competing Gran Turismo 3 and the later Forza Motorsport 1, but Sega GT 2002 is really nostalgic for me and I’d still love to actually beat it some day.

I’m not a beat em up fan but I’d call Streets of Rage 4 the best game in a genre I mostly don’t like.

I also don’t really like 3D fighters, but I greatly prefer Virtua Fighter and especially Fighting Vipers (and Sonic the Fighters but you said no Sonic) over Bandai Namco or Koei Tecmo’s offerings.

Chakan: The Forever Man

Space Channel 5
Jet Set Radio
Panzer Dragoon
NiGHTS INTO DREAM
Wonder Boy
Alex Kidd
Streets Of Rage
Puyo Puyo

The Virtua Fighter series never hooked me as a game, but the 3D graphics in the early arcade machines looked awesome at the time. It felt like a glimpse of the future.

Not produced by Sega but Shining Force and Shining Force II. And does anyone remember Vectorman? Tried to compete with DK Country with the pre-rendered 3D graphics.

They didn’t make it, but published it, Vanquish

NiGHTS into Dreams and Billy Hatcher will always hold a special place in my heart.

It’s a bummer that Sega doesn’t really do cartoony mascot-y games anymore outside of Sonic.

Like they have such a huge library of visually distinct characters just rotting away, only coming out every decade or so for a kart racing game or random cameo.