Once, there was a game where each player controlled an army. And it was fun and people liked it, but one day a player thought, “Why don’t we create a variation of this game, where each player only controls a single figure and about five of them team up?” And it turns out that this variation on the original wargame is far more popular than the original game, spawning countless similar games and creating an entire industry!
Now, am I describing how Dungeons & Dragons grew out of Chainmail, or how DOTA grew out of Warcraft III?
(Yes. The answer is yes.)