Ok for some reason Itch didn't dl the dlls on the previous version. Now it works ! I don't understand Chain Reaction, but it's fun. As for the Pixel Engine, looks promising ! (although I don't code anymore)
Thank you very much for your help. All the exe have been compiled as Release app. I think that previously (as a Debug app) there is no download. As I said I really appreciated your feedback. I wish you the best 56Bot :)
