Choose Apollo4x
Choose Apollo4x if you want an Action and Casual experience. On Steam, it's a focused single-player run rather than a multiplayer commitment. Apollo4x launched in 2015.
Apollo4x vs Colossal Citadels
Apollo4x and Colossal Citadels both land in Strategy, Indie, Adventure 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 share Strategy, Indie, Adventure on Steam. Colossal Citadels has co-op; Apollo4x does not. Apollo4x is Deck Playable on Steam Deck; Colossal Citadels has no Deck rating yet. 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 Colossal Citadels
Choose Colossal Citadels if you want the Multi-player, Shared/Split Screen, and Steam Turn Notifications side of the pairing. On Steam, it has co-op, so you can bring a friend.
Both Apollo4x and Colossal Citadels sit in Strategy, Indie, and Adventure 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
 Apollo4x |  Colossal Citadels | |
|---|---|---|
| Released | 2015 | — |
| Genres | Action, Strategy, Indie, Adventure, Simulation, RPG, Casual | Strategy, Indie, Adventure, Simulation, RPG |
| Platforms | Windows | Windows, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 4.99 USD | Price unknown |
| Steam reviews | 35.7% positive (28 reviews) | — |
| Multiplayer | Single-player only | Multi-player, Online Co-op, Shared/Split Screen Co-op |
| Developers | Digital Entertainment | Uneven Dungeon |
Side by side
- Both share Strategy, Indie, Adventure on Steam.
- Colossal Citadels has co-op; Apollo4x does not.
- Apollo4x is Deck Playable on Steam Deck; Colossal Citadels has no Deck rating yet.
Apollo4x vs Colossal Citadels — FAQ
- Are Apollo4x and Colossal Citadels similar?
- They overlap on Strategy, Indie, Adventure 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 Apollo4x have multiplayer like Colossal Citadels?
- No. Colossal Citadels supports multiplayer on Steam (Multi-player, Online Co-op, Shared/Split Screen Co-op), while Apollo4x is listed as single-player only.
- Does Apollo4x run on Steam Deck?
- Yes — Apollo4x is rated Deck Playable by Valve. Colossal Citadels doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.