Space/Time

First, get the Exapunks: TEC Redshift player on Steam.  Next, drag one or both of these .png files into the game window as it's running.  On the far left, you'll see the game's code.  In the middle, you'll see the little tiny robots that run the code.  On the far right, you'll see the game console you're actually playing on.  At the bottom are some buttons like you'd find on a Sony Walkman (remember those?).  To play, press the button that has three arrows pointing to the right.  Then follow the instructions on screen (ENTER is START).  

Tips: 

If you're playing on a keyboard, I suggest running the PC port.  It has buttons named for the keys you use on a keyboard, rather than on the handheld device.  

The game looks slightly cooler in 3D mode.