Heroes in the Imperium is intended to be played with maximum a dozen characters p/side and with a very specific mission in mind. The scale is 28mm. It is a variation of Games Workshop’s Inquisitor Game, but the rules are flexible enough for any type of skirmish game (medieval, quasi-historic...), in any type of setting. Once you master the rules a match should not last more than one hour (one and a half max.).
– Heroes.in.the.Imperium introduction