Choose Portal 2
Choose Portal 2 if you want an Action game with Multi-player, Shared/Split Screen, and Online Co-op. On Steam, it's currently about 75% cheaper on the Steam Store. 169,764 Steam reviews back the pick.
Portal 2 vs Claire de Lune
Portal 2 and Claire de Lune both land in 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 are Adventure games on Steam. Portal 2 (2011) is 10 years older than Claire de Lune (2021). Portal 2 scores higher on Steam reviews (98.9% positive) than Claire de Lune (51.5% 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 Claire de Lune
Choose Claire de Lune if you want an Indie experience. On Steam, it's the newer release (2021) and ships with the modern feature baseline. Claire de Lune launched in 2021.
Both Portal 2 and Claire de Lune sit in 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
 Portal 2 |  Claire de Lune | |
|---|---|---|
| Released | 2011 | 2021 |
| Genres | Action, Adventure | Indie, Adventure |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Deck Verified | Deck Unsupported |
| Price | 9.99 USD | 39.99 USD |
| Steam reviews | 98.9% positive (169,764 reviews) | 51.5% positive (33 reviews) |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Single-player only |
| Developers | Valve | Tactic Studios Inc. |
Side by side
- Both are Adventure games on Steam.
- Portal 2 (2011) is 10 years older than Claire de Lune (2021).
- Portal 2 scores higher on Steam reviews (98.9% positive) than Claire de Lune (51.5% positive).
- Portal 2 is currently ~75% cheaper on Steam than Claire de Lune (9.99 USD vs. 39.99 USD).
- Portal 2 has co-op; Claire de Lune does not.
- Steam Deck: Portal 2 is Deck Verified, Claire de Lune is Deck Unsupported.
Portal 2 vs Claire de Lune — FAQ
- Should I play Portal 2 or Claire de Lune first?
- If you want chronology, Portal 2 (2011) came out before Claire de Lune (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 Portal 2 and Claire de Lune similar?
- They overlap on 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 Claire de Lune have multiplayer like Portal 2?
- No. Portal 2 supports multiplayer on Steam (Multi-player, Online Co-op, Shared/Split Screen Co-op), while Claire de Lune is listed as single-player only.