Horizon Source vs PlayerUnknown's Battlegrounds (PUBG)
Horizon Source
Horizon Source is a battle royale game that many have dubbed as being the ultimate blend of PUBG, Fortnite and Overwatch... though graphics-wise, Fortnite is definitely the major influence. Similar to most games in the genre, you'll be dropped into a map where you'll then battle against other players in hopes of ending up being the last man standing. You can also build structures much like in Fortnite and resources are pretty much plentiful in the game. The gameplay feels a lot better as well - expect to be rewarded with more kills for having a good aim.However, unlike the others, this game only has a 4-man team-based game mode so you can't really play the game solo as of yet. There are other game modes as well, including a zombie mode, but these aren't ready so far. Interestingly, the game also gives you the option of playing in first or third person view. Naturally, playing in third-person can be more advantageous to you since you can see your surroundings better. There are no drivable vehicles in this game though.
Despite the many random bugs, lack of an EU server, some character balancing issue, and broken English, Horizon Source seems to be a real contender on PC against established battle royale titles like PUBG and Fortnite. The game can be incredibly addictive and fun to play. So, if you enjoy playing battle royale games, Horizon Source is a game you'll want to try!
PlayerUnknown's Battlegrounds (PUBG)
PlayerUnknown's Battlegrounds (PUBG) is a battle royale game that features a vast open world island filled with plenty of resources to scavenge. Being a battle royale game, everyone will start off on an equal playing field. Through clever scavenging and picking the correct fights will you end up with the last few survivors to battle it out for the winning spot as the map will gradually shrink, pushing survivors closer and closer together.In some way, Player Unknown's Battlegrounds reminds me of Hunger Games, albeit a much more brutal Hunger Games that you can actually play in, and I'd actually like that.
However, the game is still pretty poorly optimized long after its release as an early access game, and well, the game has drawn plenty of flak since the devs have started banning anybody who killed a streamer who cries foul due to this thing called "Stream sniping", giving rise to a pretty bad and toxic atmosphere where streamers are players whom you literally can't kill in fear of being banned for no reason other than getting the upper hand on a streamer. Worst thing is the game's not exactly a free-to-play, so if you do get banned, that's literally money down the drain.
So, even if the game is as epic a battle royale game as it is, you should keep these downsides in mind going in. Gameplay-wise, the game is amazing, but you will need to be wary of its increasingly toxic community (both players and the team managing the PR side of the game).
Its developer, BlueHole, has recently (as of March 2018) released the mobile versions of the game, PUBG Mobile. The mobile version of PUBG is available on both Android and iOS.