Craig Mazin felt inspired to cast a comedic actor like Nick Offerman because "funny people have soul", a mantra he learned from Vince Gilligan, citing performances like Bryan Cranston in Breaking Bad (2008) and Bob Odenkirk in Better Call Saul (2015).
Bill's first line in the episode--"Not today you New World Order jackboot f*cks"--was originally written as a description but Nick Offerman insisted on saying it aloud.
The closing shot of the episode is a direct nod to the first game's title screen.
A scheduling conflict originally prohibited Nick Offerman from accepting the role but he decided to take it after his wife Megan Mullally read the script; he felt attached to the material and found a kinship with Bill due to his experience in crafting.
After changing into fresh clothes, Ellie now has her exact outfit from the first game's Summer chapter.