The light gun used by the arcade version of House of the Dead 2 (and I think Virtua Cop 3 and Ghost Squad) also worked the same way as the Wii Remote's pointer, using a camera in the controller to sense infrared LEDs. So the screen doesn't flash white when you pull the trigger on the arcade version of HotD2 like it does on the console version.
Instead of a single bar with two LEDs like on the Wii, there's a row of five LEDs above and below the screen. You can make them out in this video:
Re:Refurb Weekend: The Sega Dreamcast
by zoklet-enjoyer on Monday November 28, 2022 @10:10AM
(#33774551)
I remember using the fishing controller to swing my sword in Soul Calibur.
Speaking of novelty controllers, SEGA nearly beat Wii to the motion control fad by several years. There was a fishing rod controller and a pair of maraccas that both used motion controls. they also had a prototype of a more general-purpose motion controller which strongly resembles the wii remote but unfortunately this was never released (source: https://segaretro.org/Air_NiGHTS )
If they had just made that their core control method instead of an optional gimmick that only a few games used, history could have been very different.