Someone mentioned Battlelords of the 23rd Century... I LOVED THAT GAME!!!!! It definitely was not a game to be taken seriously, but just for sheer fun, we had a blast with it. Most everything was percentile based, and the weapons... dear gawd!!!! They detailed everything from a sling stone to a black hole generator! Only thing seriously lacking was a space combat system, I was supposed to get the beta rules after paying something like $50 for them, but the developer got very sick and I never saw it. From what I have been told, SSDC bought all the rights to the game (minus the space rules) shortly thereafter. You can still order the books online.