Hmm, are you using the web or *.exe version? The web version might need a minute to load, but the *.exe version should work just-like-that;
It's here: https://doome.pwy.io/ :-) Note that due to some technical difficulties, opening this website might block your browser for a minute (the browser compiles our game's shaders then and, unfortunately, that seems to get Chrome & Firefox stuck for about a minute).