Xenoforce
An alien invasion conspiracy RPG¸ based around a secret government organization dedicated to defending the Earth against an alliance of aliens planning to infiltrate and conquer Earth. In 1947¸ a number of aliens were left behind from a crashed spaceship¸ who allied to prepare for a slower-than-light invasion centuries in the future. There are five types of aliens on Earth: Controller¸ Infiltrater¸ Observer¸ Morpher¸ Grunt. The system uses five attributes (Strength¸ Perception¸ Constitution¸ Agility¸ Influence) and various percentile skills. Character creation includes random-roll attributes (2d4 x 10 + 1d10¸ for a range from 21 to 90) and point-bought skills. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim