The 3dsx file can be loaded through the 3ds homebrew launcher using the netloader (press Y in the app), and use the 3dslink program to transfer the app.

The cia file can be installed onto the 3DS using the fbi app installer.

It should run at the full 59.7 fps on the new 2DS/3DS, with the original 2DS/3DS it runs very slow.

R button turns the frame limiter off, L button turns it back on.

File I/O for some reason is very slow with 3DS homebrew, games which rapidly save to SRAM and turn it off may slowdown for a while due to this.