Choose Cosmo's Cosmic Adventure
Choose Cosmo's Cosmic Adventure if you want an Adventure experience. Cosmo's Cosmic Adventure launched in 2014.
Cosmo's Cosmic Adventure vs Alien Carnage / Halloween Harry
Cosmo's Cosmic Adventure and Alien Carnage / Halloween Harry both land in Action on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both are Action games on Steam. Both released in 2014. Cosmo's Cosmic Adventure scores higher on Steam reviews (96.5% positive) than Alien Carnage / Halloween Harry (94.1% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Alien Carnage / Halloween Harry
Choose Alien Carnage / Halloween Harry if it matches what drew you to this matchup. Alien Carnage / Halloween Harry launched in 2014.
Both Cosmo's Cosmic Adventure and Alien Carnage / Halloween Harry sit in Action on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Cosmo's Cosmic Adventure |  Alien Carnage / Halloween Harry | |
|---|---|---|
| Released | 2014 | 2014 |
| Genres | Action, Adventure | Action |
| Platforms | Windows, macOS | Windows, macOS |
| Steam Deck | Deck Playable | Unrated |
| Price | 4.99 USD | Price unknown |
| Steam reviews | 96.5% positive (86 reviews) | 94.1% positive (17 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Apogee Entertainment | Interactive Binary Illusions, SubZero Software |
Side by side
- Both are Action games on Steam.
- Both released in 2014.
- Cosmo's Cosmic Adventure scores higher on Steam reviews (96.5% positive) than Alien Carnage / Halloween Harry (94.1% positive).
- Cosmo's Cosmic Adventure is Deck Playable on Steam Deck; Alien Carnage / Halloween Harry has no Deck rating yet.
Cosmo's Cosmic Adventure vs Alien Carnage / Halloween Harry — FAQ
- Are Cosmo's Cosmic Adventure and Alien Carnage / Halloween Harry similar?
- They overlap on Action on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Does Cosmo's Cosmic Adventure run on Steam Deck?
- Yes — Cosmo's Cosmic Adventure is rated Deck Playable by Valve. Alien Carnage / Halloween Harry doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.