Choose Grey Galactic
Choose Grey Galactic if you want an Early Access experience. Grey Galactic launched in 2025.
Grey Galactic vs Illumina Defender
Grey Galactic and Illumina Defender both land in Action, Strategy, 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, Strategy, Indie on Steam. Illumina Defender (2024) is 1 year older than Grey Galactic (2025). Illumina Defender is currently ~44% cheaper on Steam than Grey Galactic (4.99 USD vs. 8.99 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 Illumina Defender
Choose Illumina Defender if it's currently about 44% cheaper on the Steam Store. Illumina Defender launched in 2024.
Both Grey Galactic and Illumina Defender sit in Action, Strategy, 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
 Grey Galactic |  Illumina Defender | |
|---|---|---|
| Released | 2025 | 2024 |
| Genres | Action, Strategy, Indie, Early Access | Action, Strategy, Indie |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 8.99 USD | 4.99 USD |
| Steam reviews | 3 reviews | 1 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Alex McGee | James Stringer |
Side by side
- Both share Action, Strategy, Indie on Steam.
- Illumina Defender (2024) is 1 year older than Grey Galactic (2025).
- Illumina Defender is currently ~44% cheaper on Steam than Grey Galactic (4.99 USD vs. 8.99 USD).
Grey Galactic vs Illumina Defender — FAQ
- Should I play Grey Galactic or Illumina Defender first?
- If you want chronology, Illumina Defender (2024) came out before Grey Galactic (2025). 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 Grey Galactic and Illumina Defender similar?
- They overlap on Action, Strategy, 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.