After four years Haroldo Pinheiro decided to finish up his game Data Storm for the Sega Master System. The game itself is a clone of an Atari 2600 game named Turmoil.

The objective of the game is to zoom up and down the center alley and blast aliens as they streak by. Keep shooting and keep moving to avoid a deadly collision with a speeding alien spacecraft. Data Storm features a variety of speedy aliens which travel back and forth across the screen at their own unique paces. The faster they move, the more points they are worth. All aliens, except for the Prizes, must be shot while your ship is in the center alley.

http://www.smspower.org/forums/15960-CodingCompetition2016DataStormByHaroldoop