Single-player games like Planetary Zigma
Below are 8 single-player Steam games similar to Planetary Zigma, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Planetary Zigma page.
Ranked picks
- 1
SPACE HUG-DUNG
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
"Infiltrate mysterious planetary facilities to snatch the core 'Hug-Dung' and escape. Battle giant robots and alien creatures in 4-player co-op, secure the core, and return to the extraction pod in this sci-fi action experience."
- 2
Monster Mercs
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action with Planetary Zigma.
Transform into the monsters you slay and unleash new spells and abilities. Team up with up to 3 friends, take on unique contracts to get paid, upgrade your character and gear, and unlock powerful transformations in this fast-paced co-op action RPG.
- 3
Scrap Snap
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
Online co-op mech sandbox for 1-4 players. Loot scrap from dwarf planets, snap it onto your mech piece by piece, and survive against waves of scavenger drones.
- 4
Unshelved
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
Unshelved is an up to 4-player co-op Work-Life Horror Sim where you manage a cursed library. By day, handle book requests and earn an honest living. But as night falls, you must return books to their shelves and survive the horrors that haunt the halls!
- 5
UnderMire
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
Explore, fight, and SMUSH in this hand-drawn roguelite first person adventure! Descend a magical bunker filled with wild biomes, master magical tools, manage your fear gauge, overcome hazards, combat spooky enemies, and cause co-op chaos.
- 6
Catacrypt
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
Catacrypt is an online co-op roguelite dungeon crawler. Enter procedurally generated dungeons to obtain powerful upgrades and craft unique weapons. Descend floors and fight increasingly harder enemies and bosses, all to reach the bottom.
- 7
The Maze
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
Escape an ever-shifting procedural labyrinth. Loot legendary armor, overcome challenges in crafting zones, and survive deadly traps in this fantasy Roguelite. With progressive difficulty and unique enemies, can you find the exit before the Ghost finds you?
- 8
Ascent Of Eternity
Single-player alternative to Planetary Zigma — playable solo, no multiplayer required. Shares Action and Indie with Planetary Zigma.
ASCENT OF ETERNITY™ is an action-rpg rogue-like magical horde-slaying third person coop game. Fire, Ice, Electric, Light, Dark, Metal, and Life. The 7 elements call for mastery. Master the elements and ascend through eternity!