Choose Kerbal Space Program
Choose Kerbal Space Program if it's currently about 88% cheaper on the Steam Store. 77,731 Steam reviews back the pick.
Kerbal Space Program vs Rela
Kerbal Space Program and Rela both land in Indie, Simulation 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, Simulation on Steam. Kerbal Space Program (2015) is 11 years older than Rela (2026). Kerbal Space Program is currently ~88% cheaper on Steam than Rela (9.99 USD vs. 80.00 USD). 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 Rela
Choose Rela if it's the newer release (2026) and ships with the modern feature baseline. Rela launched in 2026.
Both Kerbal Space Program and Rela sit in Indie and Simulation 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
 Kerbal Space Program |  Rela | |
|---|---|---|
| Released | 2015 | 2026 |
| Genres | Indie, Simulation | Indie, Simulation |
| Platforms | Windows, macOS, Linux | Windows, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 9.99 USD | 80.00 USD |
| Steam reviews | 95.9% positive (77,731 reviews) | 1 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Squad | Relavity |
Side by side
- Both share Indie, Simulation on Steam.
- Kerbal Space Program (2015) is 11 years older than Rela (2026).
- Kerbal Space Program is currently ~88% cheaper on Steam than Rela (9.99 USD vs. 80.00 USD).
- Kerbal Space Program is Deck Playable on Steam Deck; Rela has no Deck rating yet.
Kerbal Space Program vs Rela — FAQ
- Should I play Kerbal Space Program or Rela first?
- If you want chronology, Kerbal Space Program (2015) came out before Rela (2026). 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 Kerbal Space Program and Rela similar?
- They overlap on Indie, Simulation 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 Kerbal Space Program run on Steam Deck?
- Yes — Kerbal Space Program is rated Deck Playable by Valve. Rela doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.