This is my first Digimon deck, so I wanted to prioritise simplicity and theme over anything overly complex or meta-chasing. With the exception of Dorumon, every single Digimon in the deck is a part of Machinedramon's classic evolution line. For those who want to lean even harder into the theme, I have suggested replacements in the side-deck.
The general goal is a simple one: Get Machinedramon out, build a big stack under him, stomp faces. Nice and easy to remember. Ultimate Connection, Analogman and Attack of the Heavy Mechanized Digimon are there to boost speed. Trash Ultimates to get the memory you need to get the big guy out - then move those Ultimates straight from the trash to his stack and get Rush!
Not much more to say, really. It's hardly optimised, but then again it's not really meant to be.