Amazing list of digital versions of boardgames.

A complete game embedded in a font. Why do fonts have code execution abilities? No clue. But they used it to recreate pokemon in a font. In a font.

You can play it directly on the website or install the font locally and play it in your document editor, code editor, commandline, ..image editing software, ...browser, ...random accounting software...

A Total Annihilation/Supreme Commander spiritual inheritor, which looks pretty good!

A long LONG list of wordle like games, all kinds of languages, wordle alternatives and similar ones.

A big list of games. All run on Linux. All are free. (though some free-to-play with payment models between optional and required included).

Really good list, especially considering the strategy and roguelike categories!

A full open source reimplementation of Zero Hour. Impressively far along and intends to be cross-platform in the future but Windows only for now.

Open source reimplementation of the SAGE engine (C&C Generals, Zero Hour, LOTR BFME, etc).

Early early stages, not playable yet and only supporting windows for now unfortunately. But could be good to keep an eye on over the long term.

Another opensage implementation is here which is even less far along and has fewer eyes on it, but compiles on Windows, Mac and Linux.

Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. A 100% free and open source real-time strategy game for Windows, macOS, Linux, BSD+ - Warzone2100/warzone2100

Open source C&C Red Alert implementation!

Open source tower defense!

A Victoria2 recreation as open source framework.

Intends to stay very close to the feeling of playing Vic2 but still undertakes slight changes.

Also provides the Historical Project Mod for itself here.

Overall looks really good and quite far along in development!

A Victoria2-alike 'map game' and RTS (grand) strategy. Seems relatively unfinished in its current state?

Have not dug deep into it at all yet.

Package python pygame apps as wasm blobs

Long list of good open source games, especially RTS games.

Create boardgames quickly and easily with this providing a lobby. Is in 3D and can use custom (up to 40MB) assets.

An oprn source stronghold 1 -like made with LÖVE

A way to extract the authenticator code from your steam account and add it as a OTP to other authenticator apps (aside from the using the official steam application)

Chill is a bit of a stretchy definition for this one, (e.g. Celeste might be a cozy adventure but rarely chill gameplay, Owlboy is also very hype)
but they are at least generally in the chill-comfy-cozy zone for much of their runtime