Ernie pikuniku
Given Pikuniku itself hasn't been updated for ages, and I can't save even when restoring the files to a state when I could save, I'm presuming it's either an update to Steam itself, or my system (Arch Linux). Whenever a dialogue prompt appears, the game is stuck and I.
Googling for "Steam File Write Failed" brings up zero hits. Theres a certain bug that happens when I use a controller. I've tried checking permissions, deleting this save, deleting this path, restoring both the second and third paths to a state when I could save, launching with no network connection, launching without Steam, but I cannot get Pikuniku to save. However, this file is not subsequently modified when I play the game. You want to hit them in the following order: Right Left Right Right Left Right. When you find Ernie, he will say that he drank some Green Water, probally some chemical. I can replace the file there with various old saves, which load as expected. Use Ernie to jump up through the opening in the ceiling to reveal a hidden puzzle room. Kick the breakable wall down to reach the entrance elevator, making sure to grab the 'Ernie the worm' trophy (11/18) directly left of the elevator before you return to the surface. Ernie is a worm you must find because Mother Worm requested you to. The second two seem to contain save and config files. TIDAL is the first global music streaming service with high fidelity sound, hi-def video quality, along with expertly curated playlists and original content. The first location is just the program itself, and has been unmodified for ages (and I verified, and uninstalled/installed Pikuniku just in case). These seem to be only three paths that Pikuniku is modifying: I keep incremental backups of my system, so I checked the last time I know the game was saving correctly, in November 2019.