Protect the Child is a PbtA system in playtest; there are blank character playbooks as google spreadsheets for the current playbooks, and the option to make more.
GURPS is a longstanding not-indie game, very crunchy; the GURPS Lite is a condensed version of the rules and is free to download, and GURPS Character Sheet (GCS) is a fan-made app for building characters.
Puppetland is a creepy game with a sweet basic topic (you are all puppets; the Maker has died and you don't know what to do next). The original version (which is free) is old enough that the website carefully tells you what a PDF is and what software you need to read it.