But this does not list any credits for the actual game... Looking at the websites sources the actual game-code (powerblocks.js) was apparently written in 2016

But this does not list any credits for the actual game... Looking at the websites sources the actual game-code (powerblocks.js) was apparently written in 2016 by Danijel Durakovic (who is not mentioned in the credits...) But I could not find anything about the games code/author elsewhere.