Magic Gem
From KeenWiki
The Magic Gem is an item in the Keen 4 mod The Keys of Krodacia. They can be found floating in the sky all over Krodacia. Just like Raindrops, Vitalins and Vivas, they have life-sustaining properties and if Keen can collect 100 of them, he will receive an extra life. A Giant Gem contains the equivelent of 100 Magic Gems, so when he finds one it immediately gives him an extra life.
