Single-player games like Alien Carnage / Halloween Harry
Below are 8 single-player Steam games similar to Alien Carnage / Halloween Harry, 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 Alien Carnage / Halloween Harry page.
Ranked picks
- 1
Hocus Pocus
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
Terexin, leader of the Council of Wizards, is sending the young sorcerer, Hocus, on a special mission to prove his worthiness.
- 2
Cosmo's Cosmic Adventure
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
What's green with red spots, has suction hands, and has an overbite like Bart Simpson? Of course, the answer is Cosmo! Cosmo is a young alien on his way to visit Disney World with his parents. That is, until their ship is struck by a blazing comet, forcing them to land on an uncharted planet.
- 3
Secret Agent HD
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
Return to the remote island classic world of rewards and traps in the HD remake of Secret Agent! Guide 006 through puzzles & arcade challenges of your favorite missions, then uncover the whole new Episode loaded with all new puzzles, enemies, challenges, hazards & help 006 finally defeat DVS!
- 4
Monster Bash HD
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
Apogee's bash'em and smash'em adventure plunges Johnny Dash into the evil Underworld of Count Chuck, when his dog Tex is kidnapped by Count Chuck along with hundreds of other dogs & cats! Guide Johnny through the Count's gruesome schemes, rescue all the pets, and end this nightmare once and for all!
- 5
Bionic Commando: Rearmed
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
Classic side-scrolling gameplay is reporting back for duty with Bionic Commando Rearmed, a remake of the classic NES game, out now on PC.20 years after the 8-bit classic was released, Bionic Commando Rearmed recreates the world of the original with a complete "2.5D" visual revamp.
- 6
Crystal Caves HD
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
Return to the underground classic world of treasures and traps in the HD remake of Crystal Caves! Guide Mylo through puzzles and arcade challenges of your favorite episodes, then explore the whole new Episode loaded with all new puzzles, enemies, challenges, hazards and help Mylo get back home!
- 7
A.R.E.S.: Extinction Agenda
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
You are the ultimate weapon with an ultimate sidekick – Collect secret items and get power ups to become the perfect weapon.
- 8
Terrian Saga: KR-17
Single-player alternative to Alien Carnage / Halloween Harry — playable solo, no multiplayer required. Shares Action with Alien Carnage / Halloween Harry.
KR-17 is a 32-bit, story-driven, side-scrolling action puzzle-platformer which follows the story of a military robot on a mission to subdue a rogue agent operating out of an installation on the planet Valiant. It will be the first in a multi-genre series of games centered around the story of Terrius, KR-17's home.