Great first outing, plays clean, challenging but not impossible opponent, no big bugs.
However, on the itch hosted version ause and drop package seem to both be on space bar, which makes dropping packages an odd experience. Also, the game only uses WASD despite being keyboard-only, even though most players are right-handed, which is a bugbear of mine. WASD is the standard because it's normally paired with a right hand on the mouse. Without that constraint I think it's appropriate to allow both WASD and arrow keys for movement.
Lastly, the game puts out various game data into the browser console window. I assume that's for debugging/dev but you might want to remove that when preparing a game for release just as a general polish thing. Not a big deal though, I only noticed because I took a quick look at the javascript.