Starblade Alpha 1995 (PS1) - Full Playthrough w mouse control (RetroArch)
Starblade is a 1991 3D rail shooter arcade game developed and published by Namco. The first home ports of Starblade were for the Sega CD and 3DO in 1994, the former being developed by Thunder Force creator Technosoft. A PlayStation remake, Starblade Alpha, was released in 1995 and much like the 3DO version featured an option to replace the game's flat-shaded polygons with textured graphic.
RetroArch - Duckstation Core
To play with mouse control
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Set P1 to digital gamepad
start game and when ingame exit to retroarch menu
go to controls change P1 to Playstation mouse
This is the only way i can get the mouse control to work
If you die there is no START button on the mouse button
Change P1 back to Digital Ctrl to press START to continue and than back to Playstation mouse
If there is a better way please leave a comments below