I actually got into software/systems engineering working on internal software for "minor" player groups in EVE. The level of integration[0] those orgs had 10+ years ago outranks 80% of my current real-world clients in terms of discoverability, documentation and depth.

I mean that's what you get from a bunch of eve-playing nerds committing to a labor of love. Best projects I've ever had.

[0] Real time updating mining & trading boards by location, 100bn+ ISK inventory tracking down to the cent across many corps, characters, inventories & contracts, ... Killboard & market data feeds, risk evaluation, resource allocation optimisers... Absolutely impeccable archives & backups going back 5+ years, on top of postgres & flask iirc.

edit: And audit logs EVERYWHERE. Seriously, I've seen better CYA/KYC/chain of responsabilities from eve recruitment corps than some actual for profit entities.