https://sourceforge.net/projects/virtualt/ - available for Windows, Linux and Mac.

For Windows, download the zip and unzip it to a place where you can run it.
Then just double-click on the exe.

For other systems, IDK

From the emulator "Emulation" menu select "Model" then "T200". (Also known as Tandy 200.) You only have to do this once to change it to T200 mode.

Then, from the "File" menu select "Load file from HD" and select the "mkk.co" file from your local HD.

Using the arrow keys, select BASIC in the main menu, then hit "Enter". It should drop into TANDY 200 BASIC.

CLEAR 256, 56000
LOADM "mkk"

Video of loading:

Follow the instructions in the previous step to load the game

Using the arrow keys, select BASIC in the main menu, then hit "Enter". It should drop into TANDY 200 BASIC.

Then run the command:

CALL 56000

If you quit the game, use that command to restart it from the beginning.

The emulator should retain its settings/memory so you shouldn't need to reload the game into the emulator to play, just use the CALL statement to restart the game.

To get back to the emulator's main menu, type MENU and hit enter.