I am honestly amazed at the amount of content you managed to put into this in a week, and how it's all so coherent and themed. There are so many smart little things, even the upgrades are super flavorful, adding parameters to the commands to specialize them... Omg this is genius. You can feel the passion.
Regarding things to improve, an explanation of the terminology available somewhere would be nice, like I guessed what Exhaust or Throttled did but it took me a couple battles. As a game, it feels very complete, but I think it could've leaned more into the strange places theme. Old computers is a pretty unique take but I think there is untapped potential with the whole "content of a computer merges with another one" thing. And also building up on the old web aesthetic if you want to expand on it I think something similar to hypnospace outlaw is super cool
There is also a bug where some of the card UI elements do not propagate the mouse input, the separator and the indicator in the top right. So it kind of blinks back and forth. Nothing major and easily fixable I assume.
So yeah, incredible submission, even with a single world it would be a 5/5 gameplay-wise but you went ahead and made 3. Wow. I'm probably going to come back and properly play once I've rated enough games.