Deathworld

Deathworld is a science fiction novel by Harry Harrison, first published in 1960. The story is set on the planet Pyrrus, which is known for its deadly and unpredictable environment. The main character, Jason dinAlt, is a professional gambler who is invited to Pyrrus by a wealthy businessman named Kerk Pyrrus. Jason soon learns that the planet's hostile environment has caused the inhabitants to evo...