Choose IIN
Choose IIN if it's currently about 80% cheaper on the Steam Store. IIN launched in 2018.
IIN vs Strings Theory
IIN and Strings Theory both land in Indie, 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 share Indie, Casual on Steam. IIN (2018) is 3 years older than Strings Theory (2021). Strings Theory scores higher on Steam reviews (100% positive) than IIN (68.2% 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 Strings Theory
Choose Strings Theory if you want an Adventure experience. On Steam, it's the newer release (2021) and ships with the modern feature baseline. Strings Theory launched in 2021.
Both IIN and Strings Theory sit in Indie and Casual on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen 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
 IIN |  Strings Theory | |
|---|---|---|
| Released | 2018 | 2021 |
| Genres | Indie, Casual | Indie, Adventure, Casual |
| Platforms | Windows, macOS, Linux | Windows, macOS |
| Steam Deck | Unrated | Unrated |
| Price | 2.99 USD | 14.99 USD |
| Steam reviews | 68.2% positive (22 reviews) | 100% positive (19 reviews) |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Epopeia Games | BeautifulBee |
Side by side
- Both share Indie, Casual on Steam.
- IIN (2018) is 3 years older than Strings Theory (2021).
- Strings Theory scores higher on Steam reviews (100% positive) than IIN (68.2% positive).
- IIN is currently ~80% cheaper on Steam than Strings Theory (2.99 USD vs. 14.99 USD).
- Both support cooperative play.
IIN vs Strings Theory — FAQ
- Should I play IIN or Strings Theory first?
- If you want chronology, IIN (2018) came out before Strings Theory (2021). 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 IIN and Strings Theory similar?
- They overlap on Indie, 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.
- Do both IIN and Strings Theory have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: IIN ships Shared/Split Screen Co-op, Co-op; Strings Theory ships Shared/Split Screen Co-op, Co-op.