I made the page public on Monday, but posted the announcement yesterday. I noticed the topic was on the second page the moment it was posted. So it has 7 views by now? And the visiter number of the game page is 11, including myself and some friends I guess.

Is it normal without outside links? Or did I do something wrong?

Consider focusing a bit more on making a fun game that your players will want to spread via word of mouth.  Have a nice trailer for it and that'll help things along.  Everything else is RNG since the games market is flooded with games, especially in the Holiday-ish season.