by pwatson1974
I would recommend Shattered Timelines then. The two heroes are fiarly straightforward. They're both at the Bunker and Tachyon level of complexity.Infernal Relics has more complicated heroes, more on the Absolute Zero difficulty/fiddliness. The Argent Adept can have mammoth turns using and reusing his performances to chain a host of abilities to gether and NightMist is fairly random to play owing to her magic power mechanic. Probably too much for 5 and 7 years old.
Rook City is the grim 'n' gritty expansion. The heroes can be a bit of setup to be really awesome and the villains are brutal. Also, one of the villains is a super-powered serial killer with victim cards. One of the victims is a child so comfort level issues might be involved on both parental and child sides.