Choose Heat
Choose Heat if you want a Simulation experience. 1,638 Steam reviews back the pick.
Heat vs Primordium - Day Zero
Heat and Primordium - Day Zero both land in Action, Indie, 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 share Action, Indie, Adventure on Steam. Primordium - Day Zero (2019) is 1 year older than Heat (2020). Primordium - Day Zero is free; Heat is paid (19.99 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 Primordium - Day Zero
Choose Primordium - Day Zero if you want the Steam Leaderboards side of the pairing. On Steam, it's free to play, so the barrier to trying it is zero. Primordium - Day Zero launched in 2019.
Both Heat and Primordium - Day Zero sit in Action, Indie, and Adventure on Steam and both list Multi-player, Online PvP, and Online Co-op, 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
 Heat |  Primordium - Day Zero | |
|---|---|---|
| Released | 2020 | 2019 |
| Genres | Action, Indie, Adventure, Simulation, RPG | Action, Indie, Adventure, RPG |
| Platforms | Windows | Windows |
| Steam Deck | Deck Unsupported | Unrated |
| Price | 19.99 USD | Free to play |
| Steam reviews | 48% positive (1,638 reviews) | 7 reviews |
| Multiplayer | Multi-player, Online Co-op, LAN Co-op | Multi-player, Cross-Platform Multiplayer, Online Co-op |
| Developers | Code}{atch | Behron Georgantas |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Primordium - Day Zero (2019) is 1 year older than Heat (2020).
- Primordium - Day Zero is free; Heat is paid (19.99 USD).
- Both support cooperative play.
- Heat is Deck Unsupported on Steam Deck; Primordium - Day Zero has no Deck rating yet.
Heat vs Primordium - Day Zero — FAQ
- Should I play Heat or Primordium - Day Zero first?
- If you want chronology, Primordium - Day Zero (2019) came out before Heat (2020). 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 Heat and Primordium - Day Zero similar?
- They overlap on Action, Indie, 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.
- Do both Heat and Primordium - Day Zero have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Heat ships Online Co-op, LAN Co-op; Primordium - Day Zero ships Online Co-op, LAN Co-op.
- Is Primordium - Day Zero free?
- Yes — Primordium - Day Zero is a free-to-play Steam title. Heat is paid (19.99 USD).