Mercury Craters

Usage: Free, fast online game for some of the biggest Mercury craters.
Astronomy Knowledge Game.  

How to play: Move the lander with the arrow keys and cros Mercury surface to find 10 craters.

Crop Pests Fun Game

Usage: Free educational arcade game, used to explore some garden insects, by interacting. Biology apps collection.

Interactive Knowledge Board. 

How to play: Click the crop to shake it and see what vermins lure there.

Metals Hunt Chemistry Game

Usage: Free educational arcade game used to explore 8 precious metals from the periodic table, by interacting.
Fun Knowledge Game.    

How to play: Move the ship with arrow keys and hunt the metal deposits.