Download the Ti calculator emulator Wabbitemu (Windows) http://wabbitemu.org/

Download Ti-84 Plus Operating System from the Texas Instruments website https://education.ti.com/en/software/details/en/B7DADA7FD4AA40CE9D7911B004B8C460/ti84plusoperatingsystem Download Puzzle Pack v2.0 from ticalc.org, and extract the .zip file http://www.ticalc.org/archives/files/fileinfo/102/10289.html

Run wabbitemu.exe Check "Create a ROM image using open source software" and click Next Select which model of calculator to emulate Browse and select the Operating System downloaded from the Texas Instruments Website Save the new calculator ROM file that was just created. Click "File", "Open", and select the Puzzle pack app file "PUZZPACK.8xk" Click "Calculator", "Options" and check "Emulate original 83+ hardware"

EMULATORS MUST BE SET AT 100% SPEED.

edit: 12/17/2023 fixed link to wabbitemu website