Choose Radium
Choose Radium if it matches what drew you to this matchup. Radium launched in 2015.
Radium vs Inertia
Radium and Inertia both land in Action, 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 Action, Indie, Casual on Steam. Radium (2015) is 2 years older than Inertia (2017). Radium scores higher on Steam reviews (85.5% positive) than Inertia (81% 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 Inertia
Choose Inertia if you want the Steam Leaderboards side of the pairing. On Steam, it's currently about 51% cheaper on the Steam Store. Inertia launched in 2017.
Both Radium and Inertia sit in Action, Indie, and Casual 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
 Radium |  Inertia | |
|---|---|---|
| Released | 2015 | 2017 |
| Genres | Action, Indie, Casual | Action, Indie, Casual |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 0.99 USD | 0.49 USD |
| Steam reviews | 85.5% positive (55 reviews) | 81% positive (348 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Lukas Jaeckel | Loneminded |
Side by side
- Both share Action, Indie, Casual on Steam.
- Radium (2015) is 2 years older than Inertia (2017).
- Radium scores higher on Steam reviews (85.5% positive) than Inertia (81% positive).
- Inertia is currently ~51% cheaper on Steam than Radium (0.49 USD vs. 0.99 USD).
Radium vs Inertia — FAQ
- Should I play Radium or Inertia first?
- If you want chronology, Radium (2015) came out before Inertia (2017). 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 Radium and Inertia similar?
- They overlap on Action, 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.