For context, Townscaper is a lovely, meditative townbuilding game (or what you might classify as a toy, since there's no obstacles, progression, or external objectives). It's only $6 and I highly recommend it: https://store.steampowered.com/app/1291340/Townscaper/

In the same vein is an upcoming game called Tiny Glade, which currently has a free demo available, and HN may be interested to know that it's written in Rust and makes use of Bevy: https://store.steampowered.com/app/2198150/Tiny_Glade/