Gygax's second effort at a game after leaving TSR gets an 'E' for effort. Not a bad game per se, but very rules and chart heavy, just as the hobby was beginning to favor 'role-playing' and 'story-driven' games, rather than endless rules. ( )

The Mythus Prime rules are a bit spartan and lacking, but not terrible. They'd get a 2 — notable more for their lack of notability than anything.

The Advanced Mythus rules, on the other hand, are practically the definition of rules heavy. Oof. Poorly worded. Needlessly verbose and complicated. They get a 1.5, and since most of this books is taken up with them, it gets a 1.5 as well.

Needs more editing, fewer acronyms, and especially fewer acronyms that seem to have been chosen just for the pun-factor. (BUC and STEEP, I'm looking at you.) ( )