Oh, really is that easy? I was thinking into further develop it to mobile game and didn't think it was so easy to do it. Thanks, i will try late
Viewing post in Challenge: Get 1.000.000 score in my game
for html that is enough.
however if you want to turn it into an apk file, you also need to download jdk, Android studio or sth
you may read the doc
Edit: maybe there's another problem that touching the screen may be detected as "click" rather than "holding press" (not sure about that tho... you may take an experiment or sth, or just leave it alone because this problem may not exist as well XD)