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Zona Alfa isn't going to work for you. Different setting, no magic. Why not play the Shadowrun RPG? After that, you might want to look into Savage Worlds/Interface Zero 2.0. SW was originally a minis game and IZ2.0 is a great cyberpunk source book with cybernetics and psionics, etc.
We use Rezolution as the base system with specifics from Shadowrun RPG (3rd ed) and the ICE Cyberspace RPG (these mostly for gear/cyberwear) and a card based hacking system; "Black ICE" that I wrote several years ago (like a very quick version of the excellent Netrunner CCG).
Not sure about the other Osprey books. You try Rogue Stars? Some folks like it.
Thanks Cypher226. Hardwired is simple, fast play, is combat centered and has psionics, but... no races, no magic. You could always tweak the base stats to differentiate between races. (Boost movement for Elves, armor for Dwarves, melee combat for Orks... stereotyping, I know.)
2. pick a very simple rules system that abstracts a lot of things.Troll? Give him armour and some strength ability.Fireball or grenade launcher? A long range AOE attack is the same, no matter the weapon or spell used.
Have fun and play! If the rules apply evenly to everyone, then that is fair. No army in history has ever stood across the field of battle and complained that the point counts weren't even. Life isn't fair. Overcoming the odds makes for heroic adventures, and a good commander can negate superior firepower/numbers by using solid tactics. If your made up rules really suck, tweak them and play the same scenario again. Or if the scenario is the problem, fix that and go again. Play and have fun. No need to fuss over this idea of the "perfect" game.