It's free to play on steam, but you'll need a computer with a dedicated graphics card.
I just released a new version after first releasing it 18 months ago. It's been a hard slog to scrounge time as it's not my day job but that's life.
There's a ton of obvious improvements in the future (weather systems, temperature, varying rainfall, ice/snow, more biomes, more plate tectonics, lava, etc) but all suggestions/feedback is welcome.