Instagram is good for visual identity: art, screenshots, reels and brand presence. I wouldn't consider it the best main channel for community or feedback, but it can help a lot with image.
For a game with good art, characters, environments, nice UI or strong visual moments, Instagram can work as a public portfolio for the game.
Process and characteristics
- it's a heavily visual platform, image quality matters, not long text;
- reels (short video) have the best organic reach right now, similar to TikTok;
- the feed (static posts) works as a gallery/portfolio more than as discovery;
- carousels (several images in one post) work well for a feature's progress or before/after.
What to post
- screenshots;
- character art and concept art;
- gameplay reels;
- short devlogs;
- behind-the-scenes;
- key art;
- launch assets;
- event art;
- before/after polish;
- carousels with a feature's progress.
Practical recommendation
For ads, Instagram can be useful through Meta Ads, especially if you have good creatives (just like Facebook, since it's also Meta). Organically, it's harder to grow without a steady format.
See the rest of the platforms in Social pages.