Single-player games like Gunbot Diplomacy
Below are 12 single-player Steam games similar to Gunbot Diplomacy, 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 Gunbot Diplomacy page.
Ranked picks
- 1

Gunbot Diplomacy: Blast Off
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Splatter slimes, massacre mutants, and assemble your perfect Gunbot! Survive the wasteland in this top-down shooter roguelite by customizing your weapons on the unique upgrade grid, and pick from tons of build-defining modules and wacky bots for a new experience every run. Prologue teaser build.
- 2

Deep Breach
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Deploy orbital defenses, fuse experimental turret technologies, and engineer devastating weapon builds in a tactical sci-fi horde survival roguelike. Break shields, shred armor, and adapt to evolving bio-corrupted swarms alongside a damaged tactical AI.
- 3

Tankron
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Tankron is a top-down wave survival roguelike in which you fight an ever-increasing amount and variety of enemies. Choose from a variety of upgrades to stand a chance. Discover and choose between different tank specializations to enhance your Build.
- 4

Guardians Of Restoration
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Face 56 unique bosses in thrilling roguelike action! Some bosses use 3 random attack patterns, making each encounter feel fresh and challenging. Combine skill trees and specials to craft your strategy and claim victory!
- 5

Novi Blaster
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Bullet Hell or Heaven? A rogue-like where you upgrade yourself and your enemies. Strategize around your build choices and dominate the battlefields of Novi Blaster.
- 6

Soul Machine
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Build your ultimate mech and face endless hordes of rogue robots. In this fast-paced rogue-lite twin-stick shooter, combine devastating weapons, unlock synergies, and salvage scrap to survive the mechanical swarm. Will your chassis hold together?
- 7

Kitty's Last Adventure
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Casual with Gunbot Diplomacy.
Cute Survivor where you play as Kitty the cat aboard her flying cat-saucer🛸 created by her distraught human.
- 8

Airships: Lost Flotilla
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Airships: Lost Flotilla is a steampunk autoshooter where you fight your way through waves of enemies on your way to a safe harbour. Destroy your foes, harvest wreckage, and upgrade your ship.
- 9

Vampire Survivors
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
- 10

Slime 3K: Rise Against Despot
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Welcome to Slime 3K, an unhinged roguelite bullet-heaven set in the Despot’s Game universe! Build a deck of crazy weapons, grow stronger and devour hordes of pink puny humans as a murderous jelly blob on a warpath of death, violence and pretzels.
- 11

Brotato
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Action and Indie with Gunbot Diplomacy.
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.
- 12

Stirring Abyss
Single-player alternative to Gunbot Diplomacy — playable solo, no multiplayer required. Shares Indie with Gunbot Diplomacy.
Stirring Abyss is an indie tactical squad-based game with strong RPG elements in which you uncover the ancient mysteries of the depths depicted in the classic vein of Lovecraftian horror.