One of the first games I ever made when I was starting out making games, was of course Breakout. Breakout is a good 'starter' game because it has a little bit of everything - some basic physics, collision detection, of course player input, and a simple win and lose condition.
I can't quite remember how long it took me back then to build it, but I would guess it was a month or two. You had to have access to a bunch of things back then to create a game like this:
How the world has changed! Check out this video, where I build (a very basic) Breakout in under 5 minutes, on my phone!
You'll notice the following:
This is how we aim to change the world with PlayBoxCade.