Pixel Platformer

You are an alien that has crashed onto an unknown planet. Complete objectives to advance to the next level and unlock a crate that signals for help. There are aggressive aliens on the planet that will attack you. WASD or arrow keys to move. You can also use the spacebar to jump. Don't fall in water or get hit by enemies; you will lose a life. You have 3 lives. Normal enemies can be jumped on to be defeated, and can drop a heart. Ghosts cannot be attacked and will disappear after 10 secs.