Took much longer than I anticipated to make these… I made a Cannoneer and Czar tank from Battlezone 1 (1998) - one of my favorite games of all time!
One thing I struggled with was coloring the models to match the reference images so the colour schemes are really basic for now. In future I will return and add some nice texturing 
Cannoneer render:
Reference:
Czar render:
Reference:
Please let me know what you think!