Choose Stonies
Choose Stonies if you want a Free To Play and Casual experience. On Steam, it's free to play, so the barrier to trying it is zero. Stonies launched in 2018.
Stonies vs Substructure
Stonies and Substructure both land in Simulation 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 Simulation games on Steam. Stonies is free; Substructure is paid (Price unknown). Both support cooperative play. 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 Substructure
Choose Substructure if you want a Strategy experience.
Both Stonies and Substructure sit in Simulation on Steam and both list Multi-player, Online Co-op, and Co-op, 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
 Stonies |  Substructure | |
|---|---|---|
| Released | 2018 | — |
| Genres | Simulation, Free To Play, Casual | Strategy, Simulation |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 51.7% positive (201 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Online Co-op, Co-op |
| Developers | upjers | Dubious Design |
Side by side
- Both are Simulation games on Steam.
- Stonies is free; Substructure is paid (Price unknown).
- Both support cooperative play.
- Stonies is Deck Verified on Steam Deck; Substructure has no Deck rating yet.
Stonies vs Substructure — FAQ
- Are Stonies and Substructure similar?
- They overlap on Simulation 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.
- Do both Stonies and Substructure have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Stonies ships Online Co-op, Co-op; Substructure ships Online Co-op, Co-op.
- Is Stonies free?
- Yes — Stonies is a free-to-play Steam title. Substructure is paid (Price unknown).
- Does Stonies run on Steam Deck?
- Yes — Stonies is rated Deck Verified by Valve. Substructure doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.