GMT has announced a new game based on the Commands & Colors system from designer Richard Borg. The initial scenario book for Commands & Colors: Medieval will focus on conflicts between the Byzantine Empire and Sassanid Persians (530-627 AD). Moors also show up in a few battles. Visigoths, Vandals, Ostrogoths, Franks, and Alemanni are set to make appearances in future expansions.

Mechanically, the new game adds superior armor, increases the number of blocks in a cavalry unit to four, reduces the number of battle dice for heavy infantry from five to four, and allows light bow cavalry a parting shot when evading.

Commands & Colors: Medieval will ship with a mounted game board, terrain tiles, a deck of command cards, eight battle dice, and more than 320 blocks for a retail price of $75. Orders through GMT’s P500 system, though, get the preorder price of $50.