Like more than one of them
14 games close to two or more of WWII Online, Left 4 Dead 2 and Stardew Valley
Easy Red 2
WWII Online, but team-based, and six times the hours
Loved · 90%World War II · FPSAlso like Left 4 Dead 2
No More Room in Hell
Left 4 Dead 2, but free to play, and half the hours
Loved · 90%Zombies · SurvivalAlso like WWII Online
Enlisted
WWII Online, but PvP, and five times the hours
Liked · 81%World War II · Vehicular CombatAlso like Left 4 Dead 2
Call of Duty: World at War
WWII Online, but with zombies, and nine times the hours
Loved · 92%World War II · FPSAlso like Left 4 Dead 2
Insurgency: Sandstorm
WWII Online, but co-op, and 11 times the hours
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
Day of Infamy
WWII Online, but eight times the hours
Liked · 82%World War II · FPSAlso like Left 4 Dead 2
Day of Defeat: Source
WWII Online, but team-based, and seven times the hours
Loved · 92%World War II · FPSAlso like Left 4 Dead 2
Call of Duty 2
WWII Online, but five times the hours
Loved · 94%World War II · FPSAlso like Left 4 Dead 2
BLOCKADE 3D
Left 4 Dead 2, but pixel art, and a third of the hours
Divisive · 59%Zombies · FPSAlso like WWII Online
BLOCKPOST LEGACY
WWII Online, but pixel art, and twice the hours
Mixed · 75%FPS · Massively MultiplayerAlso like Left 4 Dead 2
WARMODE
WWII Online, but about survival, and co-op
Divisive · 62%FPS · Massively MultiplayerAlso like Left 4 Dead 2
Battlefield: Bad Company 2
WWII Online, but with destruction, and six times the hours
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
More like WWII Online
10 games closest to WWII Online of your picks
Rising Storm/Red Orchestra 2 Multiplayer
WWII Online, but team-based, and 14 times the hours
Loved · 93%World War II · FPS
Foxhole
WWII Online, but with base building, and 22 times the hours
Mixed · 79%World War II · Massively Multiplayer
ACE COMBAT 8: WINGS OF THEVE
WWII Online, but story-rich, and ten times the hours
Liked · 84%Flight · Vehicular Combat
World of Tanks Blitz
WWII Online, but PvP, and 26 times the hours
Mixed · 78%World War II · Massively Multiplayer
Rising Storm 2: Vietnam
WWII Online, but set in the Cold War, and 14 times the hours
Liked · 87%FPS · Wargame
More like Left 4 Dead 2
6 games closest to Left 4 Dead 2 of your picks
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%Zombies · Survival
How this list is made
Each game is measured against each of your picks the way a games-like list measures it: the Steam community tags, Steam genres and IGDB themes they share, each counting for more the fewer games carry it. A game's place is how alike it is to your picks together, as a share of each pick's best match, so one alike to two of them comes before one alike to just one. It must be close to at least one of them, as close as it would have to be on that game's own list.
None of your picks is on the list, nor a second release of one, nor a game of their own series. Up to 30 games are shown. Under each name, the kinds it shares with the pick it is closest to, and how it differs from that pick.