Very much a 'does what it says on the tin' kinda book. The companion expands on the 1-page game rules, and provides a solid resource for all the 1PG line. Consistent rules that aren't really affected by the changes in genre are what I hoped for, and what I got.
Vehicles (and some rules to make them more practical) are included, so you've got tanks, planes, jeeps and even Godzilla! stat'd out right here for use.
Character longevity and long-term campaigns are discussed too, which is appreciated by those of us (me!) who don't only want to do the action movie one-off style of game.
All in all, if you're a 1PG player, this is great, not too heavy stuff but certainly useful.