From the beginning of FromSoftware's history in 1994, it has made two series in parallel. The first was its medieval fantasy games, starting with King's Field. A line of spiritual sequels went on to include Shadow Tower, Evergrace, Eternal Ring, and eventually Demon's Souls. The other line of games FromSoftware was known for is its mecha games, which used to be its most popular product. Armored Core came first in 1997, and remains FromSoftware's largest franchise with over 10 entries to its name. Other mech-centric games like Metal Wolf Chaos and Mobile Suit Gundam Unicorn built off the tested framework of Armored Core.