Building a compelling business case for an indie game is hard.
I recently found myself banging my head against the wall in frustration, as I tried to build a decent business case for a game. It felt like I was wandering randomly in the fog.
The culmination was a slightly embarrasing pitch meeting with a friendly publisher, where a couple of obvious flaws in my analysis was pointed out. I needed to make a better tool for myself.
One thing I had struggled with was finding actual relevant comparable games. I guess that's often a case of "my game is unique" syndrome. That, and the fact that I found it utterly overwhelming. So many games, so much data to dig through...
I ended up making a spreadsheet which is basically a combination of the Comparative Analysis approach from Rami Ismail's pitch template (https://ltpf.ramiismail.com/pitch-template/ - Specifically this slide Thanks for sharing, Rami!), and the Revenue Calculator from VGinsights.com (I've found their 'Indie Access' paid tier worth the subscription fee).
I've also found https://games-stats.com/steam/tags/ super useful when exploring the right tags.
With this spreadsheet, combined with data mining on VGinsights, it feels much more manageable.
I hope you'll feel the same way.