Sega Dreamcast Unlicensed Missing Discs
From Redump Wiki
Region for games should be worldwide releases without regional variants.
Until support is added to redump, please submit your dumps here .
- wikipedia (need to check for what was released on disc)
Needs titles added from 
4x4 Jam Alice Dreams Tournament (Collectors Edition) Alice's Mom's Rescue Another World Armed Seven Bang Bang Busters Battle Crust Breakers Cool Herders Dux (Limited Edition with bonus CD Audio) Dux 1.5 Elansar and Philia - bought user7 Fade to Black Fast Striker Feet of Fury - submitted Escape 2042: The Truth Defenders Escapee, The Finding Teddy FlashBack: Quest for Identity Ganryu Ghost Blade (3 disc edition) Gunlord (Collector Edition) Hermes - submitted Inhabitants - bought user7 Irides: Master of Blocks - bought user7 Last Hope Last Hope: Pink Bullets Leona's Tricky Adventures Maqiupai - bought user7 NEO XYX Orion's Puzzle Collection Pier Solar and the Great Architects Redux Dark Matters Rush Rush Rally Racing Rush Rush Rally Racing DX Rush Rush Rally Reloaded Sturmwind Wind and Water Puzzle Battles - 2008 RedSpotGames Release Wind and Water Puzzle Battles - 2016 DragonBox Release - submitted Zia and the Goddess of Magic
Unlicensed USA Applications
Blaze Exploder (US version)  Cheats N Codes Vol. 1 - submitted Codebreaker GameShark CDX GameShark Lite MP3 DC (2 discs) - bought user7
No known method to dump these. Thread for discussion 
Bleem! for Dreamcast: Customed-tuned to Supercharge Gran Turismo 2 Bleemcast! for Metal Gear Solid - bought RevQuixo Bleemcast! for Tekken 3 - bought RevQuixo Super Game Converter 
Unlicensed Europe Applications
Action Replay CDX Action Replay CDX (Demo Version)  Blaze Xploder Game Guru (Russia) Game Guru 1 (Russia) - bought Maki Game Guru 2 (Russia) Game Guru 3 (Russia) - bought Maki Game Guru 4 (Russia) Game Guru Gold 1 (Russia) MP3 DC (2 discs) - bought wiggy Xploder Ultimate Cheats Collection 
Unlicensed Japanese Applications
Pro Action Replay  Pro Action Replay 2