Single-player games like The Harbinger of the Deep
Below are 9 single-player Steam games similar to The Harbinger of the Deep, 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 The Harbinger of the Deep page.
Ranked picks
- 1
Earl vs. the Mutants
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and Adventure with The Harbinger of the Deep.
Save humanity in a mutant-ridden apocalypse! Dive headfirst into Earl vs. the Mutants, a high-octane top-down survival action-roguelite set in the aftermath of a nuclear apocalypse.
- 2
FULLYBROKEN: WAY HOME - A Roguelike Shooter
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and Adventure with The Harbinger of the Deep.
A roguelike shooter set in a post apocalyptic world, with dynamic narrative happening along your journey. Your goal is to go back home to your wife and kids. But the journey back home is perilous and full of danger. Be careful, your actions and choices along the way could leave you dead.
- 3
Gearomancer
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action with The Harbinger of the Deep.
Step into the mechanical apocalypse in Gearomancer, a fast-paced twin-stick action roguelite. Play as elite V.E.R.T.E.X. agents to dodge brutal bullet hells and obliterate elemental horrors. Harvest Arcane crystals, forge permanent upgrades at your hub, and die to return stronger than ever.
- 4
The Knight Witch
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and Adventure with The Harbinger of the Deep.
The Knight Witch is a metroidvania adventure game with fast-paced, shoot 'em up combat set in a beautifully hand-drawn world. Cast devastating card-based spells, forge close bonds, and make moral choices all in your quest to save your home and discover who's behind the War Golem invasion.
- 5
Pesticide Not Required
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action with The Harbinger of the Deep.
Mow down countless crops and corrupt critters while crafting game-breaking builds! Pesticide Not Required is an action roguelite bullet heaven game with farming sim elements that offers a myriad of stats and special character traits to create wildly diverse run possibilities.
- 6
Shape Shifter: Formations
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and RPG with The Harbinger of the Deep.
Shape Shifter: Formations is an action twin-stick shooter with rogue-lite elements, where you must destroy hordes of geometric enemies alone or with a friend. Select your ship and combine a large variety of weapons, abilities and infinitely stacking upgrades to craft your own unique build.
- 7
NIMRODS
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and Adventure with The Harbinger of the Deep.
Assemble a limitless arsenal in this survive-em-up roguelite shooter. As a Gun Manufacturer's testing force, your mission is simple: test the latest gun tech and scavenge alien planets. Collect insane weapon parts to invent crazy guns that slay thousands. You may not survive, but your guns will!
- 8
Sharded World
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and Adventure with The Harbinger of the Deep.
Sharded World is a reversed bullet hell, rogue-lite, ARPG game combining simple gameplay and great rpg progression. Each level has its own unique features and challenges. Upgradable characters, weapons and orbs. Challenges, daily quests, and leaderboards. Fight, get stronger and defeat the Lich!
- 9
Deep Dark Wrath
Single-player alternative to The Harbinger of the Deep — playable solo, no multiplayer required. Shares Action and Adventure with The Harbinger of the Deep.
Plunder for Points, Collect and Strengthen yourself with Enchanted Cards, Survive countless enemies, Venture deep to find their source, Escape, and Quell the Deep Dark Wrath!