Choose Slender: The Arrival
Choose Slender: The Arrival if you want an Adventure game with Steam Leaderboards. 3,482 Steam reviews back the pick.
Slender: The Arrival vs Outside
Slender: The Arrival and Outside both land in Action, Indie 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 Action, Indie on Steam. Slender: The Arrival (2013) is 6 years older than Outside (2019). Slender: The Arrival scores higher on Steam reviews (86.9% positive) than Outside (41.7% 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 Outside
Choose Outside if it's currently about 70% cheaper on the Steam Store. Outside launched in 2019.
Both Slender: The Arrival and Outside sit in Action and Indie 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
 Slender: The Arrival |  Outside | |
|---|---|---|
| Released | 2013 | 2019 |
| Genres | Action, Indie, Adventure | Action, Indie |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 19.99 USD | 5.99 USD |
| Steam reviews | 86.9% positive (3,482 reviews) | 41.7% positive (12 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Blue Isle Studios | ELECTROSTALIN ENTERTAINMENT, EvilGamesStudios |
Side by side
- Both share Action, Indie on Steam.
- Slender: The Arrival (2013) is 6 years older than Outside (2019).
- Slender: The Arrival scores higher on Steam reviews (86.9% positive) than Outside (41.7% positive).
- Outside is currently ~70% cheaper on Steam than Slender: The Arrival (5.99 USD vs. 19.99 USD).
- Slender: The Arrival is Deck Playable on Steam Deck; Outside has no Deck rating yet.
Slender: The Arrival vs Outside — FAQ
- Should I play Slender: The Arrival or Outside first?
- If you want chronology, Slender: The Arrival (2013) came out before Outside (2019). 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 Slender: The Arrival and Outside similar?
- They overlap on Action, Indie 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 Slender: The Arrival run on Steam Deck?
- Yes — Slender: The Arrival is rated Deck Playable by Valve. Outside doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.