I would like to discuss with you what my approach was for creating this game.
First of here is the entry page: http://ludumdare.com/compo/minild-58/?action=preview&uid=32655
Google Play Store download link: https://play.google.com/store/apps/details?id=com.bruynhuis.pixelpong
And a preview video:

So I was aware that there was a Mini LD this week but it was only until Tuesday that I decided to enter.
And the only reason I entered was because an idea for a game came to me.
The tools I used:

• Game Engine – jMonkeyEngine
• Texture editing – GIMP
• Sounds FX – bfxr
• Sound editing – Audacity

At first everything went very well.
I had some problems with performance when I converted the game to run on android and the reason for this was the amount of individual objects passed to the graphics card.
The first moment I batched those spike objects I had an instant increase in FPS.
Other than that, this game took me about 6 hours of work.