Bundler

Find indie devs whose games would pair well with yours - for bundles, news shoutouts, Curator picks, or any other cross-promotion.

How it works

  1. Sign in with Steam.
  2. Claim your game and verify ownership by posting a temporary short code in your game's Steam discussion forum (which carries your [developer] tag automatically). You can delete the post immediately after it's verified.
  3. Set the kind of games you'd cross-promote with - required tags, exclusions, minimum wishlist count.
  4. Browse or search the pool. Mark interest. When two devs both say yes, you both see each other's contact info and can take the conversation off-platform.
Sign in through Steam
What does Steam sign-in actually share?

Just one thing: your numeric SteamID (e.g. 76561198717070149). That's it.

Steam OpenID does NOT give Bundler your email, your password, your friends list, your owned games, your payment info, or anything else. We can't email you (we ask separately, and that field is optional). We can't post to your profile, can't message your friends, can't do anything on your behalf.

The flow is: Steam confirms "yes, this person owns this account" → you're signed in. Read the Steam confirmation screen yourself when you click Sign in - it lists exactly what's shared. Compare to Google or Discord OAuth, which expose your email, name, profile photo, and often more.

One honest caveat: if your Steam profile is set to public, anyone with your SteamID can read public profile data via Steam's APIs. That's how Steam profiles work, not Bundler-specific. We don't read profile data beyond verifying you own the SteamID.

Sources you can verify: Steam developer documentation, OpenID 2.0 spec, and the Bundler source code (it's all open).

Was this built with AI?

Yes. Bundler was developed with significant help from Claude Code, an AI coding tool. I'd never have shipped it as a solo dev in days otherwise.

Every line was reviewed by me before shipping. The whole codebase is open source on GitHub - if you want to verify what the tool does and how, the code is right there. Read it, audit it, fork it.

If "made with AI assistance" is a dealbreaker for you, the source is still free to use however you want. Honesty about the toolchain is the least you should expect from any project right now.

Free. Open source. Built for indies.

Bundler - cross-promo matchmaking for indie devs