Alright this might be a pretty tough one:
I'm thinking of a downloadable F2P multiplayer game I used to play around the year 2000's. It was a futuristic top down shooter.
-Futuristic looking. My faded mental picture says it looked like Fallout/Halo mixed
-Static Top down view (Player is always centered)
-Had jetpacks
-I think there was a weighted equipment system that effected gameplay. (Fast Light-Armored=Scout, Slow Heavy Armor=Heavy)
-Possibly had class system? I remember being able to cloak, there were medics, and engineers
-Variety of weapons that you could buy (Mines, Grenades, Assault Rifles, Sniper, Rockets)
-It was a CTF based game?
-Up to 16 or 24 or 32 players, i think
-I think it was pretty detailed, had destructible environments
Me and my friend used to play this a lot and I think we stopped playing when it stopped being F2P. We've actually been trying to figure out what the name of this game was called for like the past 2 years. :lol