I generally try to avoid American, but I'm not so strict about it that I check the origin on the games I play (most of the time you can't find that out anyway). I also buy them on Steam anyway, because Linux support.

I've already swapped out basically everything American of mine, but as time goes on I've been thinking of narrowing my target. The companies I'm mainly focussed on are below:

• Amazon
• Tesla
• Microsoft
• Apple
• Google
• Facebook
• Netflix
• Disney
• Boeing
• The gun companies
• The car companies
• The computer chip companies
• Visa/Mastercard (if that were possible)
• The banks (if they even exist in your country)
• Exxon/Chevron (I'm dubious on promoting a local community oil industry though)

I still use American streaming services (currently Amazon Prime) but I do the thing where you subscribe for 1 month and then unsubscribe for 2 years.

The reason I'm boycotting is to undermine America's power. I don't think boycotting indie games made in America does that. It would weaken their currency but the effects are marginal. The real impact comes from buying alternatives until they get to a point where they can compete, and in the arts America already has that competition.