Really liking the game but either there is a bug or just not developed yet, because i just cannot seem to be able to progress anymore, im at day 106 and nowhere have i gotten opportunities to unlock the arcade scenes naturally. I was able to get the car ending but there just is no way to progress anymore other than that and even then that ending didn't make sense for me since all i've done has been corruption. Not sure if there is a submission ending yet but the alexa one was shown unlocked in the gallery even though i have not done it yet nor does there seem to be a way to do it.
Arcade is in the sewer. Once you get it it'll appear in the upgrade tree.
The game over screens are all unlocked because I haven't implemented any kind of roll back function so there is no way to unlock the game over scenes in the gallery. To get the Alexa ending start by feeding the cat 3 times. Then put the camera on it in the sewer.
Otherwise there is a lot of content in the sewer that is kind of optional and you don't find just by rising corruption.