The XM-550 C.H.A.S. Unit

If you like the genres War, Science Fiction , this game is for you.

If you like the mechanics Skill Based (buy or gain skills), Level Based (Earn XP and level up), Progression Tree (Skills, professions, magic abilities, etc.), Attribute/Stat Based (STR, CON, PER, etc), Dice (Primarily d20), Random Attribute Generation (during Character Creation) , you will enjoy this game.

This game falls under the category: Sourcebook (rules/options to enhance play).