(Also, has there been a thread on this before? Couldn't find anything, but message board search functions are horrible...)
Edits: Added Turbo Force, Blast Works, Geometry Wars: Retro Evolved 2, Exception and Exception Conflict, Laseroid, Shooting Love 200X, Bangai-O Spirits, Ketsui Death Label, Moero! Twinbee
Three or More Player Simultaneous Shmups
Single System / Single System and Online
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Giga Wing 2 (Dreamcast) (4 player single system)
Aegis Wing (X360 XBLA) (4 player single system or online)
Turbo Force (Arcade) (3 player single system)
Blast Works: Build & Destroy (Wii) (4 player single system)
Laseroid (PC) (3 player single system)
Shooting Love 200X (Shooting Ginokentei (Shmups Skills Challege) mode only) (X360 Japan only release) (4 player single system)
Moero! Twinbee (Famicom - Japan version only, requires a Famicom and Japanese multitap to work) (3 player single system)
LAN/Online/System Link Only
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Exception (PC) (4 player max lan/online) (borderline arena shmup)
Exception: Conflict (PC) (16 player max lan/online) (borderline arena shmup)
Ketsui Death Label (DS) (8 player wireless system link) (semi-alternating, only one person plays at once but everyone always needs to be paying attention, as it switches automatically during play...)
Borderline Shmup-like games
Single System/ Single System and Online
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Armada (Dreamcast) (4 player single system)
Geometry Wars: Retro Evolved 2 (X360 XBLA) (4 player single system)
LAN/Online/System Link Only
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Subspace (PC) (MMO shmuplike, only sort of counts) (still playable via Continuum client)
Fire Fight (PC) (4 player LAN play, 2 player modem play) -- top-down free-roam game, could consider it a shmup depending on your definition (sort of like, say, Zone 66 or the top-down levels in Thunder Force II)
Bangai-O Spirits (DS) (4 player wireless system link)
What should be added to this list? It would be great to know if there are more games like this, 4 player simultaneous can be a lot of fun in games, shmups included.
