My son (10) asked ages ago if he could play Run Escape. I didn't know what he was on about until I spoke to one of his pals. He's 12 now and has pretty sure grown out of Runescape! It is definitely a kids intro to MMORG and very safe.I think I'll let him playEverquest. He's certainly no AH freak like me lol!
If wargaming is your thing, Battlefield 2 takes some licking.