Razznor

Hi everyone! First post here :). I'd love to know your thoughts on games that have customizable units. Preferably games that did unit customization incredibly well. I played pretty much anything to do with Battletech and fondly remember Starfleet Command 2 and 3. I've dabble with HoI4 and Stellaris, but they only touch on unit designing. Have I missed any great indie games that feature unit customization? Am I the only one obsessed with this? Thanks for your replies!