I am starting the development of an indie video game (Outer Space Shack, a current era space base management game). As an IT professional with no recent experience in video game development, I was assuming the technical risk was important, but I found that it is easier than I thought to build something thanks to nice modern tools (Blender, Unity...) and the incredible amount of knowledge available online. After two week-ends working on it, I think I have prototyped around 40% of the game basic features. Of course, a lot more time is required to build something that can be published, but I am now very confident I can build the game.
So the challenge seems to be almost only around marketing, as the video game market is over-crowded (maybe management games are a little bit less crowded though).
So far, I have built a landing page, published a few posts on topic-related forums / subreddits, and a few dozen people got in touch (subscribing to the newsletter, joining the subreddit...). as a side note, I got very good feedback an encouragement from Indie Hacker community.
Next steps I plan are creating youtube videos with game demos, and I think it woud be great to have screenshots on Instagram, even if it is a pain to be forced to use a mobile phone to publish pictures on Instagram. When I have more to show, I plan to contact a few youtubers / bloggers interested in the area.
Still, I get the feeling I am permanently a half-spammer, and maybe I am not doing things right. So I would be very interested in any advice or feedback on what works or not.