Ninja’s and Superspies - Different System

[MechaPilot]

I remember Palladium as being both a Percentage based knock off of Dnd and a convoluted mess of Awesome* ideas

Knowing that I'd maybe look to D20 Modern or Spycraft or just divide the percentages by 5% steps and convert to d20


*well in the sense of appealing o the teenage boys notion of Awesome

5% sounds like it'd give you too big a bonus. The various Palladium books talk about perception checks and they recommend that people using stealth skills determine their bonus to an opposed d20 roll by dividing the stealth score by 15%.

 

[Dalillama]

I'd definitely recommend GURPS; it has extensive support for the Ninjas and Superspies playstyle. Particular supplements I'd suggest are Martial Arts (for obvious reasons), Ultra Tech (lots of cybernetics and advice for adding more, plus cool spy gadgets that your high-tech agencies can hand out) and Action (any and all of that line will be relevant); you'll have a huge variety of martial arts, fancy moves, secrets of the masters that let people do wire-fu, cyborgs, chases, investigations, etc. in a consistent and balanced format.