They are:
SEGA DREAMCAST
7 products
SEGA Dreamcast Logo T-shirt
$24.95 - $29.95
SEGA Dreamcast Hardware T-shirt
$24.95 - $29.95
SEGA Dreamcast The Ultimate Gaming System Long-Sleeve T-shirt
$29.95 - $34.95
SEGA Dreamcast Logo Hoodie
$39.95 - $49.95
SEGA Dreamcast Controller Notebook
$14.95
SEGA Dreamcast Camouflage Controller Phone Case
$34.95
SEGA Dreamcast Controller Ornament
Regular price $14.95
Now $8.97
(Save 40%)
https://shop.sega.com/collections/sega-dreamcast
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And don't forget:
JET SET RADIO
9 products
SEGA Jet Set Radio Yellow Ringer Tee
$29.95
SEGA Jet Set Radio Aqua Zip Hoodie
$44.95
SEGA Jet Set Radio Yellow Hoodie
$44.95
SEGA Jet Set Radio Graffiti Denim Jacket
$99.95
SEGA Jet Set Radio Water Bottle
$21.95
SEGA Jet Set Radio Patch Set
$24.95
SEGA Jet Set Radio Beat Glasses
$12.95
SEGA Jet Set Radio Stencil
$12.95
SEGA Jet Set Radio Tablet Case
Regular price $24.95
Now $14.97
(Save 40%)
https://shop.sega.com/collections/jet-set-radio