Best games
Best MMO games of 2015
The 14 best MMO games released in 2015, ranked from 1,784 critic and player ratings.
The best MMO game of 2015 is The Isle, with a critic score of 82/100 — updated September 2026.
How this ranking is built
- Games are ranked on the aggregated critic score out of 100 imported from IGDB and Metacritic, never on Tier's own grades.
- A game only enters the ranking with at least 30 external ratings, so a single enthusiastic review never outranks a proven classic.
- Community grades from F to S are shown next to every game, and only stated as a fact above 5 Tier ratings.
- Release window covered: 2015.
- 14 games are listed on this page, carrying 1,784 ratings between them.
- Rankings are recomputed hourly; this one was last rebuilt on 28 September 2026.
Top 14
01
The Isle
The Isle is intended to be a gritty, open-world survival horror game. Explore vast landscapes of dense forest and open plains, traverse treacherous mountains and wade through dark swamps where horrors lurk. Hidden within are ruins that hold insight as to what came before. Through it all, keep in mind there is only one goal: survive.
82
/100
02
ArcheAge
80
/100
03
The Elder Scrolls Online: Tamriel Unlimited
77
/100
The Isle
The Isle is intended to be a gritty, open-world survival horror game. Explore vast landscapes of dense forest and open plains, traverse treacherous mountains and wade through dark swamps where horrors lurk. Hidden within are ruins that hold insight as to what came before. Through it all, keep in mind there is only one goal: survive.
82
/100
02
ArcheAge
80
/100
03
The Elder Scrolls Online: Tamriel Unlimited
77
/100
04
Block N Load
Five of you. Five of them. Face off in a battle where everything you build, destroy, construct or shoot has a devastating impact on the entire game. Build defences using a crazy range of block types and work together in this FPS where no game is EVER the same.
72
/100
05
Agar.io
Agar.io is a massively multiplayer online game where players control a cell in a colorful, grid-like environment. The main goal is to grow your cell by consuming smaller cells scattered throughout the map, while avoiding being eaten by larger cells controlled by other players.
71
/100
06
Fishing Planet
Fishing Planet is a FREE to play unique and highly realistic online first-person multiplayer fishing simulator developed for anglers to bring you the full thrill of actual fishing! Choose your lures, make your trophy catches, discover new possibilities and sharpen your real angling skills anywhere, anytime
70
/100
07
Trove
Thirsting for danger and lusting for loot? Grab your friends, hone your blades, and set off for adventure in this free-to-play action MMO. The Sun Goddess has shattered the world into infinite realms. Now they're yours to explore, build, and protect – all in the name of fun!
62
/100
08
Shop Heroes
Brand new fantasy shop simulation & RPG game packed with endless adventure!
60
/100
09
Freestyle2: Street Basketball
MMO basketball game FreeStyle2 prides its unique gameplay and graphic. Players are set up to a street-style league and are allowed to use freestyle moves. Players are focused on a single character with the position of their choice. Team up with the best street ballers and build up team work!
53
/100
10
Survarium
Survarium is a post apocalyptic Free to play FPS game, currently in steam early access. In its current state, Survarium offers three playable competitive gamemodes in a FPS style. With interesting map design, character progression and balanced pay to win methods, Survarium is proving to be a hit. The Survarium development team is also releasing an open world gamemode which just like Dayz, requires players to scavenge, loot and survive. This gamemode is currently in development, and not yet released. No release date has been issued.
53
/100
11
H1Z1: Just Survive
50
/100
12
Heaven Island - VR MMO
50
/100
13
8BitMMO
50
/100
14
sZone-Online
40
/100
Block N Load
Five of you. Five of them. Face off in a battle where everything you build, destroy, construct or shoot has a devastating impact on the entire game. Build defences using a crazy range of block types and work together in this FPS where no game is EVER the same.
72
/100
05
Agar.io
Agar.io is a massively multiplayer online game where players control a cell in a colorful, grid-like environment. The main goal is to grow your cell by consuming smaller cells scattered throughout the map, while avoiding being eaten by larger cells controlled by other players.
71
/100
06
Fishing Planet
Fishing Planet is a FREE to play unique and highly realistic online first-person multiplayer fishing simulator developed for anglers to bring you the full thrill of actual fishing! Choose your lures, make your trophy catches, discover new possibilities and sharpen your real angling skills anywhere, anytime
70
/100
07
Trove
Thirsting for danger and lusting for loot? Grab your friends, hone your blades, and set off for adventure in this free-to-play action MMO. The Sun Goddess has shattered the world into infinite realms. Now they're yours to explore, build, and protect – all in the name of fun!
62
/100
08
Shop Heroes
Brand new fantasy shop simulation & RPG game packed with endless adventure!
60
/100
09
Freestyle2: Street Basketball
MMO basketball game FreeStyle2 prides its unique gameplay and graphic. Players are set up to a street-style league and are allowed to use freestyle moves. Players are focused on a single character with the position of their choice. Team up with the best street ballers and build up team work!
53
/100
10
Survarium
Survarium is a post apocalyptic Free to play FPS game, currently in steam early access. In its current state, Survarium offers three playable competitive gamemodes in a FPS style. With interesting map design, character progression and balanced pay to win methods, Survarium is proving to be a hit. The Survarium development team is also releasing an open world gamemode which just like Dayz, requires players to scavenge, loot and survive. This gamemode is currently in development, and not yet released. No release date has been issued.
53
/100
11
H1Z1: Just Survive
50
/100
12
Heaven Island - VR MMO
50
/100
13
8BitMMO
50
/100
14
sZone-Online
40
/100
Frequently asked questions
What is the best MMO game of 2015?
The Isle currently tops the ranking with a score of 82/100 across 38 ratings. Ranking updated September 2026.
How is this ranking built?
Games are ranked on their aggregated critic score out of 100, with a minimum vote threshold so a single glowing review never outranks a proven classic; the Tier community's own F-to-S grades are shown alongside each game.