Choose Quantum Conundrum
Choose Quantum Conundrum if you want a Strategy experience. 1,308 Steam reviews back the pick.
Quantum Conundrum vs Up Against Aliens
Quantum Conundrum and Up Against Aliens both land in Casual 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 Casual games on Steam. Quantum Conundrum (2012) is 11 years older than Up Against Aliens (2023). Up Against Aliens is free; Quantum Conundrum is paid (8.99 USD). 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 Up Against Aliens
Choose Up Against Aliens if you want an Action, Indie, and Adventure experience. On Steam, it's free to play, so the barrier to trying it is zero. Up Against Aliens launched in 2023.
Both Quantum Conundrum and Up Against Aliens sit in Casual on Steam and both list Steam Leaderboards, 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
 Quantum Conundrum |  Up Against Aliens | |
|---|---|---|
| Released | 2012 | 2023 |
| Genres | Strategy, Casual | Action, Indie, Adventure, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 8.99 USD | Free to play |
| Steam reviews | 84.3% positive (1,308 reviews) | 3 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Airtight Games | eEKBAh Studios |
Side by side
- Both are Casual games on Steam.
- Quantum Conundrum (2012) is 11 years older than Up Against Aliens (2023).
- Up Against Aliens is free; Quantum Conundrum is paid (8.99 USD).
- Quantum Conundrum is Deck Playable on Steam Deck; Up Against Aliens has no Deck rating yet.
Quantum Conundrum vs Up Against Aliens — FAQ
- Should I play Quantum Conundrum or Up Against Aliens first?
- If you want chronology, Quantum Conundrum (2012) came out before Up Against Aliens (2023). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Quantum Conundrum and Up Against Aliens similar?
- They overlap on Casual 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.
- Is Up Against Aliens free?
- Yes — Up Against Aliens is a free-to-play Steam title. Quantum Conundrum is paid (8.99 USD).
- Does Quantum Conundrum run on Steam Deck?
- Yes — Quantum Conundrum is rated Deck Playable by Valve. Up Against Aliens doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.