CrossCode on GOG.com
CrossCode is an action RPG written in ImpactJS that has superb performance even on modest hardware, is cross-platform, and is available DRM-free from GOG. I've been playing early versions of it over the past couple of years and have had a ton of fun. It's got a bunch of great artwork, interesting characters, a novel world, and satisfyingly challenging gameplay that blends puzzles and action beautifully. It's 1.0 release is today, and I'm very much looking forward to starting anew with Lea (the protagonist) to see how the final version of the world improves upon the version I know from 2017.