Games like Greed Party
Games like Greed Party include Risk of Rain 2, Megabonk, Shape of Dreams, PEAK, and Gunfire Reborn. We matched them by the tags players give Greed Party on Steam (Action Roguelike, Action, Arcade, Gambling, and Hidden Object): closest matches first, and among equally close ones the better-known games.

Risk of Rain 2
Shared: Action Roguelike · Co-op · Action

Megabonk
Shared: Action Roguelike · Action · Roguelite

Shape of Dreams
Shared: Action Roguelike · Co-op · Action

PEAK
Shared: Co-op · Action Roguelike · Adventure

Gunfire Reborn
Shared: Co-op · Roguelite · Action

Vampire Survivors
Shared: Action Roguelike · Roguelite · Action

Hades
Shared: Action Roguelike · Action · Roguelite

Borderlands 2
Shared: Action · Co-op · Loot

Crab Champions
Shared: Action Roguelike · Arcade · Co-op

Ravenswatch
Shared: Action Roguelike · Co-op · Action

Sephiria
Shared: Action Roguelike · Co-op · Action

BALL x PIT
Shared: Action · Arcade · Action Roguelike

The Spell Brigade
Shared: Action Roguelike · Co-op · Roguelite

Streets of Rogue
Shared: Action Roguelike · Action · Roguelite

Zombieville USA 3D
Shared: Action · Arcade · Action Roguelike

Gamble With Your Friends
Shared: Co-op · Gambling · Action Roguelike

Deep Rock Galactic: Rogue Core
Shared: Co-op · Action Roguelike · Action

KLETKA
Shared: Co-op · Action · Action Roguelike

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Roguelite

Warhammer 40,000: Space Marine 2
Shared: Action · Co-op · Adventure

Starship Troopers: Extermination
Shared: Action · Co-op · Arcade

Heroes of Hammerwatch
Shared: Action Roguelike · Co-op · Roguelite

Haste
Shared: Action · Roguelite · Action Roguelike

Roboquest
Shared: Action Roguelike · Co-op · Roguelite