Midgard: Heroic Battles is, at heart, very simple: multibased units, standard measurement ("spear throw") based on chosen base width, and stamina as a stat representing loss of lives and fighting spirit both. You're not even supposed to paint that many minis: the author suggests 8-12 28mm minis per infantry unit when using 12cm bases. Other scales are acceptable and supported: as long as both you and opponent use the same base width. So if you want to save playing space, 6mm units can have 8cm base, though I'd probably lean on 12cm anyways for that MASS BATTLE feel.
TTS screenshot: a Chaos Warrior army arrayed against a bunch of Saxons.
