Ah, thanks for letting me know! The gd.games version is definitely smoother. If you can find a way to offer meaningful choices of upgrades etc. I think that would really make the most of the two-button gameplay: it's always nice to be able to keep the core game simple, but offer a bit more depth between levels. I also feel as though it could lend itself to local multiplayer as well: if you've only got two buttons to handle, one player could use left/right and the other could use A/D (though I remember multiple cameras being a bit of a long shot in GDevelop last time I tried, which might make split-screen a challenge to set up if it's even possible).