I have ported Bouncing Balls for Babies to the Windows 8 store. You can download see it by clicking the Windows Store button below the screenshot.
It has actually been on the windows app store for about a month, but I ran into some difficulties because it was listed in Russia, South Korea, and a couple other locales that required a game board rating for listing. I fixed that issue (by removing those locales) but then it took more than a week for microsoft to stop suspending my app. Well, it’s back up, and ready to go. You require a windows 8 or greater OS to install this.