6. HearthStone | Coolest Online Game
Developed By: Blizzard Entertainment
Portable: XBOX, iOS, PC, Android
Online Players: 30 Million online players
Launched Year: 2012
HearthStone was a small project of Blizzard Entertainment for experiment purpose but it got the hits and now been played on the recent occasion. This game is of collecting cards deck from different houses and different powers. Each of the cards is used to lower the opponent’s health and life to win the game.
This free-to-play game was initially released as Heroes of Warcraft as it accommodates many characters from the actual WoW series. Building on the Unity engine, this game received the British Academy Games Award in the multiplayer category.