Casio Prizm program
File type: Program executable file
A g3a file is a program or add-in for a Casio Prizm graphics and programmable calculator. It stores a program intended to run on the calculator.
File type category:
Program executable file
Date updated: October 12, 2026
The g3a file extension is associated with the Casio Prizm graphics and programmable calculator series, released in 2011.
The g3a file stores a calculator program for Prizm written in assembly language and packaged as a Prizm add-in. The resulting file contains the executable program used by the Prizm system.
On Windows, Mkg3a is used to create or work with g3a files. The completed file can be transferred to a compatible Casio Prizm calculator through a USB connection, where the calculator can install and run it.
On Windows, use Mkg3a to work with a g3a file. It is not a document intended to run as a normal Windows application.
To use the program, transfer the g3a file to a compatible Casio Prizm calculator through USB and install it on the calculator.
A g3a file is a calculator executable and does not have a useful general-purpose conversion format. To change the program, edit its source code and rebuild it, then package the resulting program as a new g3a file with Mkg3a.
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