Aight I will just start making a list I guess and you and figure out if you like it or not.
- Warframe
- Smite/Dota2/League of Legends
- Realm Of The Mad God
- Path of Exile
If you wanna try some FPS games try
- CS:GO
- Ring of Elysium
- Combat Arms: Reloaded
- Planet Side 2
Some P2P games that you may be interested in (All prices are in USD and for base game only)
- $29.99 Arma 3 : Runs like shit on most hardware like 30-40 fps average at the worst and 60-70 at best. Depends on what you're playing. King of the Hill is worst fps since there is 100 players in a small area being rendered all at the same time. Over all is just like a Military Simulator; Or it can be a fun RPG game if you play on the Life servers or something.
- $19.99 (On sale 7.99 also free weekend right now) Rainbow Six Siege : Kinda like CS:GO but higher graphic detail and more realistic. Same concept for the most part but you may find it much more pleasing that CS:GO
- $19.99 Risk of Rain 2 : Hack n slash huge button smashing game. You fight off waves for each level stage and has you get stronger so does the enemies your fighting. Huge chaos, most the time I don't know what's going on because there is so much shit on the screen in the later stages. If I remember right the waves are infinite so you can play for a long time.
- $29.99 Hell let loose : Super fun still in development, but it's basically you're in WW2. You join a squad/create a squad select your role. So you have a commander which is a player and he commands the squad leaders which can communicate to the squad leader and the squad leaders then lead there squad to attack/defend or take out takes and stuff like that to win advance and take over objectives being towns/cities in the game. It's a 100 player game and the game looks decent and runs really well. I have a 1080ti and at 1440p I hit cap fps all the time which is like 120 I think.
- $9.99 Terraria : 2D Minecraft basically; But you can make a house and with the right things you can get npcs to show up to and live in your house which you can buy items from them with coins (copper,silver,gold,platinum). Can gather material to make items that can summon bosses and kill them to get material to make even better equipment and ect.
About all I can think of right now.