Every time there's an "what counts as an Indiegame" discourse, I'm reminded that this question has already been answered in Strong Bad Email #203:

Alastar Gabriel (but you can call me anything). I'm an ex-professional software developer, now I make weird art and music :p I will give you bug facts unprompted
Twitch, Ko-fi, Neocities, Mastodon
We can be friends but I have to warn you, I am a little awkward and kind of hard to get ahold of :p
ENG/日本語 OK
Every time there's an "what counts as an Indiegame" discourse, I'm reminded that this question has already been answered in Strong Bad Email #203: