What is WarMachine

Warmachine is 30mm scale wargame released by Privateer Press, it combine the best parts of fantasy with touches of steam punk as steam powered warjack battle across the table with sound and smoke of burnt gun powder.

Warmachine is a tabletop steampunk^[1]wargameproduced by Privateer Press.
The game is played with whitemetal miniatures manufactured by Privateer Press representing
military characters from the Iron Kingdoms D20 Role Playing Game setting.
Battles are fought between warcasters from rival kingdoms, the large steam-powered warjacks that the warcasters control, and troops consisting of humans and fantasy races.

From Wikipedia.com