Choose Portal
Choose Portal if you want the Includes Source SDK, Subtitle Options, and Camera Comfort side of the pairing. On Steam, it carries the stronger Steam consensus at 98.7% positive across 81,472 reviews.
Portal vs Defy Gravity Extended
Portal and Defy Gravity Extended both land in Action 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 Action games on Steam. Portal (2007) is 9 years older than Defy Gravity Extended (2016). Portal scores higher on Steam reviews (98.7% positive) than Defy Gravity Extended (84.1% 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 Defy Gravity Extended
Choose Defy Gravity Extended if you want an Indie and Casual experience. On Steam, it's currently about 80% cheaper on the Steam Store. 2,654 Steam reviews back the pick.
Both Portal and Defy Gravity Extended sit in Action 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 |  Defy Gravity Extended | |
|---|---|---|
| Released | 2007 | 2016 |
| Genres | Action | Action, Indie, Casual |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Deck Verified | Deck Unsupported |
| Price | 9.99 USD | 1.99 USD |
| Steam reviews | 98.7% positive (81,472 reviews) | 84.1% positive (2,654 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Valve | Paul Fisch |
Side by side
- Both are Action games on Steam.
- Portal (2007) is 9 years older than Defy Gravity Extended (2016).
- Portal scores higher on Steam reviews (98.7% positive) than Defy Gravity Extended (84.1% positive).
- Defy Gravity Extended is currently ~80% cheaper on Steam than Portal (1.99 USD vs. 9.99 USD).
- Steam Deck: Portal is Deck Verified, Defy Gravity Extended is Deck Unsupported.
Portal vs Defy Gravity Extended — FAQ
- Which is better, Portal or Defy Gravity Extended?
- On Steam reviews Portal scores higher (98.7% positive) than Defy Gravity Extended (84.1% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Portal is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
- Should I play Portal or Defy Gravity Extended first?
- If you want chronology, Portal (2007) came out before Defy Gravity Extended (2016). 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 and Defy Gravity Extended similar?
- They overlap on Action 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.