Games like Keep Keepers
Games like Keep Keepers include Factorio, PlateUp!, Bloons TD 6, Schedule I, and Gunfire Reborn. We matched them by the tags players give Keep Keepers on Steam (Online Co-Op, Automation, Tower Defense, Roguelite, and Management): closest matches first, and among equally close ones the better-known games.

Factorio
Shared: Automation · Base Building · Management

PlateUp!
Shared: Management · Roguelite · Co-op

Bloons TD 6
Shared: Tower Defense · Online Co-Op · Multiplayer

Schedule I
Shared: Management · Co-op · Automation

Gunfire Reborn
Shared: Online Co-Op · Roguelite · Co-op

Mindustry
Shared: Automation · Tower Defense · Base Building

Satisfactory
Shared: Automation · Base Building · Crafting

Palworld
Shared: Online Co-Op · Multiplayer · Crafting

The Riftbreaker
Shared: Online Co-Op · Tower Defense · Base Building

Risk of Rain 2
Shared: Roguelite · Co-op · Online Co-Op

Overcooked! 2
Shared: Online Co-Op · Local Co-Op · Co-op

Valheim
Shared: Online Co-Op · Base Building · Multiplayer

Raft
Shared: Online Co-Op · Co-op · Multiplayer

It Takes Two
Shared: Online Co-Op · Co-op · Local Co-Op

Ravenswatch
Shared: Online Co-Op · Co-op · Roguelite

Children of Morta
Shared: Online Co-Op · Multiplayer · Local Co-Op

ELDEN RING NIGHTREIGN
Shared: Online Co-Op · Co-op · Multiplayer

Streets of Rogue
Shared: Roguelite · Multiplayer · Online Co-Op

Orcs Must Die! 2
Shared: Tower Defense · Online Co-Op · Co-op

Ship of Fools
Shared: Online Co-Op · Local Co-Op · Roguelite

The Spell Brigade
Shared: Online Co-Op · Roguelite · Co-op

The Escapists 2
Shared: Online Co-Op · Multiplayer · Local Co-Op

The Planet Crafter
Shared: Online Co-Op · Base Building · Co-op