I played this game semi competitively, almost reaching my goal of platinum, instead hitting Gold III.
I was drawn into this game by the presentation. As somebody who loves Leagues lore, the game it comes from offers little to no engagement with it, aside from small voice lines. Legends of Runeterra however spotlights this world in all it's beautiful complexities. From the wonders of Mt Targon, and the gods that abide by the summit, to a colorful little pub nestled close to a mountain. The world feels huge.
The way the basic cards interact, creating a story within gameplay elements, while the champion cards remain so faithful to not just the characters move set, but their personality!
I remember a card from the Frelord that was a low cost low powered card. This babbiling anxious crazy fellow, bursting into the pub screaming "THERES A MONSTER ON THE MOUNTAIN" The cards actual purpose states "When I'm summoned, draw a unit with 6+ power or higher" with the story literally playing out as a gameplay mechanic. I dunno if this is common in most other card games, but I found these types of character cards so interesting and fun!

Not really a review of the game, but of the entire TwitchPlaysPokemon experience as a whole.

If you have no idea what this is, essentially it was the original game Pokémon Red live streamed through an emulator. Everything was exactly the same, except chat controlled the entire experience through typing in inputs; left, right, up, down, a, b, etc.
This experience to me was unbelievable! The sense of chaotic cooperation it evoked, as well as the creativity of the community was unlike anything I'd ever seen before.
It truly felt like the first story driven gaming experience where literally thousands of people were at the wheel controlling the outcome. I'm still blown away by the absolute impossible odds of catching and safely transferring our angel AA-J to our team.
To this day I still don't think I've come across a stream or an event that has inspired this level of unique storytelling and unity.