Weight and Mass
Description: Two of the key elements of physics, an object's weight and mass determine how it's affected by gravity.
Category: Janet's Planet
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Game Spotlight
Try to defeat as many aliens as possible before being destroyed in this space adventure game. There are two bonuses in the game: One slows down enemies for 5 seconds after it’s been collected, and the other spawns a "laser line" that clears out every enemy on the screen.