Outer Space by Bitware is an action indie game made with PICO-8.
Your main goal in the game is to navigate across enemy alien lines in order to reach and defeat the enemy overlord. Explore the screen and shoot enemies to defeat them and earn points. Collect the green hearts. Five of them will grant you an extra life. While you have green hearts, you can use your ships’ special ability by pressing the (X) special power button. So better hurry up hero, humanity depends on you!