Laser Grenadiers is a set of free wargames rules for science fiction games. The author writes
LaserGrenadiers extends modern combined arms combat into the future, allowing players to field powered armor infantry, tanks, crewed weapons, tanks, wardrones, helicopters, battledrones or “mechs,” artillery and ground attack aircraft. Vehicle propulsion systems may be wheeled, tracked, grav, hover, rocket or walker. The rules include all types of science fiction weaponry (lasers, cone rifles, phasers, ion cannon, etc.), but do not include psionic warfare. Fire combat dominates the game, with melee combat occurring infrequently. The rules were intended for use with any science fiction figures the players may have, and have been used for battles ranging from a few figures on each side up to the final battles of major campaigns with up to a hundred figures and twenty armored vehicles per side.