I never really cared for Risk. The map was imbalanced as hell - I always played with 4-5 players; so the winning strat was to get Australia or South America and let the other players weaken each other until you have accumulated enough armies to start steamrolling everyone (still this God-forsaken map carries on to Warzone, not just for one, but as the first 2 templates in QuickMatch). The late-game cards were also very game-changing that it shifted the whole game into capturing just one single territory every turn and keeping your stack unbeatable instead of protecting bonuses.
And then, one of my friends introduced me to Risk 2210 AD. That was a game changer. You have only 5 turns in the game, but the map was improved drastically.
You have the Land, Water, Nuclear, Diplomat and Lunar Commanders, which attack and defend with a 8-sided die. The cards were different, not just mindless troop reinforcement. The map was a lot more balanced, with more bonuses and Australia finally can be attacked from more than one side.
You could go to the moon, which had even more bonuses.
This game was so beautiful but it had no online version. My friends and I were looking for a way to play Risk 2210 AD online, and Warlight was the closest we could find. I love that you could have simultaneous turns in Warlight.