Quake II: Call of the Machine

In my opinion, Dimension of the Machine > Call of the Machine. The hub level seems to be inspired by Doom Eternal. I very much prefer the hub level of Dimension of the Machine. The candles and orange lighting offered a better atmosphere. Due to tech limitations some levels have loading screens in between zones and this creates a design challenge. By intuition a player looks for a key, button or lever to activate or unlock something within the same zone they are currently in. The design of this expansion placed some buttons or levers in a different zone, separated by a loading screen. Thus, the player gets confused because it's counter-intuitive to have buttons or levers in a level while the door or blocked path is in another level.

The best level was "Operation Firewall" for me. For some reason the music reminded me of "Heart of Anxiey" from FF7.

The level in the moon bears a strong resemblance to Duke 3D, including the music.

I didn't like the ending. Underwhelming boss battle. After it the player is teleported to a black void with the message "Congratulations!".