Pro Evolution Soccer 
, Metal Gear Solid, Final Fantasy, Kingdom Hearts (Anyway Konami and Square-Enix make great games - there are a lot more of them) or a perfect Czech 
dungeon crawler - 7 mages, as a successor of Gates of Skeldal. 
Final fantasy is not underrated. But I would like to add some indie and browser games like krunker and some other one that I forgot.
Krunker and Mini-Royle 2 are some good browser FPS, also do check out club penguin rewritten
Indie games in general are underrated. Some of them put much more effort than big companies like EA.
Boid, probably my favourite RTS type game.
in 3 steps
Choose the game that interests you and play itfor free.
Every game has some quests for which you will receive Soul Gems.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
You know that on Gamehag you can get real rewards for free, right? Join us, complete walkthrough and get your chest!
We do play a lot of games and due to the sheer number of games available a lot of games go under our radar, but in them a few truly shine. What would be these games?