RPGMemes

You should check out GURPS. Its a simpler system with universal campaigns (modern, fantasy, mech, dimension hopping, steampunk). The system is super easy. You start with 100 points to make your character. You can spend them on stats, skills, spells, and perks. You can even gain more points by taking quirks.

You roll 3d6 for everything. Your goal is to get under your skill number. Fireball of 13 needs to roll under 13. If its raining or something, your GM can choose to put a -4 on that. So now you need to roll under 9. Just simple addition and subtraction, but it works really well.