Factorio is by all accounts extremely polished, and with a crew significantly smaller than many AAA titles.
There are some others that are similarly placed - Stardew Valley, arguably Minecraft (or GTNH heh).
I think the problem for the studios is they don't know HOW to do those 30 million dollar games, but they're really good at the 300 million dollar ones, and they're not selling to the users, they're selling to corporations (think Microsoft/Playstation/Target).
(It's also rare you have a game that is allowed to improve the way Minecraft, Factorio, or Stardew Valley have; go back and play builds or releases from around "when they went big" and you'll find they're horribly rough - I love Minecraft 1.7.10 but I simply cannot play without the QoL mods from GT:NH for long.)
There are some others that are similarly placed - Stardew Valley, arguably Minecraft (or GTNH heh).
I think the problem for the studios is they don't know HOW to do those 30 million dollar games, but they're really good at the 300 million dollar ones, and they're not selling to the users, they're selling to corporations (think Microsoft/Playstation/Target).
(It's also rare you have a game that is allowed to improve the way Minecraft, Factorio, or Stardew Valley have; go back and play builds or releases from around "when they went big" and you'll find they're horribly rough - I love Minecraft 1.7.10 but I simply cannot play without the QoL mods from GT:NH for long.)