Like more than one of them
5 games close to two or more of Champions Online, Stardew Valley and Left 4 Dead 2
STALZONE
Champions Online, but free to play, and an extraction shooter
Mixed · 72%MMORPG · Massively MultiplayerAlso like Left 4 Dead 2
Fishing Planet
Champions Online, but a hobby sim, and relaxing
Liked · 87%Massively Multiplayer · MMORPGAlso like Stardew Valley
Infestation: The New Beginning
Left 4 Dead 2, but an MMO, and PvP
Divisive · 42%Zombies · SurvivalAlso like Champions Online
Tom Clancy's The Division
Left 4 Dead 2, but twice the hours
Mixed · 71%Shooter · Co-opAlso like Champions Online
PlanetSide 2
Left 4 Dead 2, but free to play, and an MMO
Liked · 80%FPS · Team-BasedAlso like Champions Online
More like Champions Online
7 games closest to Champions Online of your picks
Albion Online
Champions Online, but with crafting, and about survival
Mixed · 78%MMORPG · Massively Multiplayer
STAR WARS: The Old Republic
Champions Online, but story-rich, and in space
Loved · 90%MMORPG · Massively Multiplayer
Marvel's Avengers - The Definitive Edition
Champions Online, but a hack and slash game, and half the hours
Mixed · 67%Superhero · Comic Book
More like Stardew Valley
6 games closest to Stardew Valley of your picks
More like Left 4 Dead 2
12 games closest to Left 4 Dead 2 of your picks
No More Room in Hell
Left 4 Dead 2, but free to play, and half the hours
Loved · 90%Zombies · Survival
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%Zombies · Survival
Project Zomboid
Left 4 Dead 2, but a survival crafting game, and twice the hours
Loved · 94%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.