It sounds to me like that issue the cursor is not being captured in the browser version of the game, and can hit the boundaries of your screen. Something we plan to fix. Thank you for the report!
Our writer, Cole, did an excellent job with the dialogue, and I am glad to hear you enjoyed it. He wrote much more that did not make it into the game, but will make it into a later release, so stay tuned! :)
Thanks so much for playing!