Building something valuable for a passionate niche and then sharing it in their subreddit is one of the most effective ways to get traction. Here’s how a student developer did it with a Classic Tetris project.

Algorithm:

1. The creator, a college senior studying computer science, built nestris.org, a site designed to modernize how Classic Tetris is played competitively and casually.
2. He shared the project in r/tetris, a niche subreddit with ~59k members who are dedicated to the game. The post included:
   • A clear title: “I built a website that revolutionizes Classic Tetris.”
   • A description of unique features — ranked matchmaking, puzzle mode with 100,000+ puzzles, AI analysis, and leaderboards.
   • Links to the site, promo video, and Discord community.
3. The post was authentic and personal, explaining his motivation and positioning the project as a community tool, not a commercial product.
4. Community members responded positively, with comments highlighting the quality, effort, and potential of the project.
5. The creator also cross-posted in r/tutor, reframing the project to highlight the educational aspect: how he built the multiplayer system and how others could learn from it. This allowed him to reach both gaming fans and aspiring developers.

Why It Worked:

• The project solved a real problem for Tetris fans — creating a modern, online hub for the classic game.
• The post was relevant to the subreddit’s interests, ensuring organic engagement.
• By tailoring the pitch for r/tetris and r/tutor separately, the creator maximized reach across different audiences.

How to Scale This:

• Share future updates (new features, tournaments, etc.) as follow-up posts in the community.
• Post technical breakdowns of the project in coding or game dev subreddits.
• Create tutorial content that uses the project as a teaching tool for programming students.

Related Ideas:

• A chess developer building and sharing an online analysis tool in r/chess and r/learnprogramming.
• A retro gaming enthusiast creating a leaderboard system and posting in r/retrogaming.
• An indie developer sharing a puzzle generator project in r/gamedev and r/games.

This Is How It Looks Like

What users say

• “This is really dang cool! I’m used to posts like these being mildly disappointing, but this actually has a lot of potential.”
• “This is insane. I can’t imagine how much work this must have been.”

By making a side project relevant to a passionate niche and presenting it authentically in their subreddit, the creator earned credibility, feedback, and an engaged user base for his Tetris platform.

Final Notes

• Create side projects directly relevant to a subreddit’s core interest.
• Frame posts to fit the community’s culture and needs.
• Cross-post to other relevant subreddits by adjusting the angle — technical, educational, or fun.