You can purchase the game on https://www.gog.com/game/noita, and download a DRM free installer for Noita. Their own launcher (GOG Galaxy) is purely optional. All games purchased on GOG can be downloaded that way.

Thanks! I didn't know that! :)

There are actually many releases on HumbleStore and GOG without DRM protection.

i think this would make it necessary to include a lot of anti-piracy code that would not normally be necessary. otherwise it will be up on pirate bay right after release.

There are actually many releases on HumbleStore and GOG without DRM protection.