Candy Box 2 -- there is more to this than meets the eye: https://candybox2.github.io/. Source: about 1 year ago

Looking as an outsider you will see a bunch of weird-ass ASCII art that doesn't even look that good compared to, say, Candy Box, while as the actual player you're actually wrestling an eldritch beast made of deadly gas into the ground as you pulp it with a dead giant's body. Source: over 1 year ago

Not really like the games you mentioned but Candy Box 2, A Dark Room, and Kittens Game are some of the best browser-based idle games ever. Source: over 1 year ago

Not Candy Box or Candy Box 2, was it? Dubious guess but it does keep coming up. Source: over 1 year ago

I appreciate anyone suggesting CC Classic, but since I'd expect a JS Console minigame to be text-based, then maybe it should be more like Candybox2 (https://candybox2.github.io/ which if I'm not mistaken was part of the inspriation for CC!). Source: over 1 year ago

Clonk Rage, I’m not sure if this counts as it originally wasn’t open source, but it’s not developed further and the creator released the source code for all games of the Clonk franchise. Source: almost 2 years ago

F2P as it will never cost anything. Else anybody could add all freeware, Open Source, abandonware and shareware games. For example go to clonk.de and download all versions for free (except openclonk). Source: almost 3 years ago

I am an OpenStreetMap enthusiast since 2013, before, I was very much involved in a PC game called OpenClonk (and before that Clonk) in my free time. Source: about 3 years ago