S.M.O.L.

Luis and I threw this together for your pleasure on Pixel Day 2017.

Arrows = move
"X" = fires
"P" = Pause
Click button on screen to toggle sound/music on/off
Press 1 or 2 to toggle screen size.

To get the S.M.O.L. achievement you have to beat the game in mini-mode (without ever having made the screen large).