Half Life vs N.O.V.A. Legacy
Half Life
Half Life is the first game in the famous Half Life series that has gained a certain amount of infamy among gamers mainly because Valve has refused their fans' request to create a Half Life 3. That being said, the game itself is pretty old - released back in 1998 - and it was a shining gem of a game back in its time because of its amaing gameplay and engaging storyline. Unlike any other games in the 90s, Half Life manages to combine action and adventure along with a what-was-back-then a realistic world into one amazing package. The game also has a multiplayer mode that turns the game's many maps into arenas for you to play against your friends.Half Life is one of "those games" that almost every gamer (midcore and above) would at least have heard of before. It's as classic as classic games go. If you enjoy old-school games, Half Life is probably one of the first few games you'd want to play.
N.O.V.A. Legacy
N.O.V.A. Legacy is among the best sci-fi-themed MMOFPS game on mobile of all time and it has inspired a popular new franchise, N.O.V.A. as well. In this game, you play as Kal Wardin, a veteran N.O.V.A. marine, who have been drafted once again into the Colonial Administration forces to fight against the alien invaders that threaten the whole of humanity. The game provides players with a wide variety of PvE game modes to play in, including an offline story mode, Shadow Missions where you get to fight aliens on a limited time battlefield, and Special Ops that pits you against various unique alien formations.N.O.V.A. Legacy also has a multiplayer mode that will allow you fight against other human players in exciting 4-vs-4 team deathmatches or the last-person-stading deathmatch. In addition to crafting and upgrading your weapons, customizing your character's Mobile Armored Suit is very easy and in-depth as well. You can add Cores to give yourself some nice bonuses to supercharge your gameplay.
When it comes to multiplayer shooters on the mobile platform, there are only a few that can go as far as to claim that it plays just like a console game - this game is definitely one of them. Granted that the graphics isn't as great as marketed, but the gameplay is amazing and you even get an offline story-based missions on this free-to-play app! It is as good as it gets!