Single-player games like Project Bad Apple's AP400
Below are 8 single-player Steam games similar to Project Bad Apple's AP400, 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 Project Bad Apple's AP400 page.
Ranked picks
- 1
HEADCUTTER
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Adventure with Project Bad Apple's AP400.
HEADCUTTER is a sci-fi spaghetti western FPS with brutal combat, destructible environments, and lots of gore. Track targets as a space bounty hunter, explore maps with multiple routes, and use the crunchy gunplay to cut their heads off so you can get your money!
- 2
NullGate
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
A lo-fi PS1 roguelite FPS where every arena is generated at runtime. Dash, slide and wall-kick through rooms that never repeat, weave through slow glowing bullets, and bank your kill-streak before something takes it from you. Die, upgrade at the Underdock, and dive again.
- 3
Prototech
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
Be careful, in the darkness there are surveillance robots ready to kill you at any time. Will you discover the strangeness and secrets behind Prototech's presence at the school.
- 4
HKO: Advanced Survival
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
An open-world survival experience that combines exploration, suspense, resource management, tactical combat, and cooperative multiplayer. Explore dangerous islands, customize weapons, survive against the Penitents and escape with friends in The Phantom Runner experience.
- 5
Neon Rain
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
Welcome to Vakrex, a world brimming with life but plagued by conflict. You must sift through the occupational forces and hostile wildlife to investigate the cosmic phenomena known as Neon Rain. You don't call the shots on this treacherous planet, however. Evolve or die.
- 6
Object 24
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
A psychological horror set in a Soviet apartment. By day, perform rituals to manage your anxiety. By night, face your home as it turns into a threat. Survive in absolute solitude, face the fears you tried to escape, and remember everything you were forced to forget.
- 7
Fall Off Reach
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
Fall Off Reach is a first-person narrative survival game and the sequel to Drift Into Eternity. Alone in the wreck of the WANDERER IV, explore, repair failing systems, and delay the inevitable as everything keeping you alive collapses.
- 8
Twisted Tower
Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.
Blast your way through an abandoned 1950s theme park crawling with fairy-tale mascots, twisted puzzles, and deadly traps. Uncover the dark secrets of your past as you race to the top to win back the love of your life.