It’s a FB game, but don’t let that stop you.
I’ve been playing MAA for about two years, and I haven’t burned out on it yet. I’m heavily into the PVP aspect of it. Been trying to finish the current season at Adamantium ranking, but I always get beat down to Vibranium the last day.
I’m trying out a new defense combo: Tact agent with Snappy Service ISO, Staff of Aspeklios, Tankard, Cube, and Scroll of Oziroch + Rescue w/Generosity ISO + Invisible Woman w/Air Pressure ISO. The idea is to keep healing and force fields constantly generating, so it will take forever for the opposing team to win and they forfeit out of frustration. 
Plus, it means less AFK fights so my rating won’t plummet 200+ points overnight.
I like it, but I’m not anywhere close to Adamantium level. Stuck in the lower end of Gold at the moment. I use Dr. Doom, and my Agent uses the Scroll of Anglob-something?, a nano-nurse healing thingy, the nail gun with the shield effect, and a spear I got recently.
I’m playing it, but not going nuts on spending money on it. I hover between Diamond and Vibranium levels. (Though in the last tourney, I was at Vibranium and when the tourney closed, somehow managed to get Rocket Raccoon anyway…)
I finished at Vib and got RR as well. Due to technical difficulties, PD bumped everybody’s final rank by one at the end of the tournament.
Ohhh! Glad to have that mystery solved, then!
I’ll probably never qualify for Drax in time, though.