Choose Astronimo
Choose Astronimo if you want a Simulation game with Online Co-op. Astronimo launched in 2023.
Astronimo vs Ultra Mega Planet Battles
Astronimo and Ultra Mega Planet Battles both land in 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 are Adventure games on Steam. Astronimo (2023) is 2 years older than Ultra Mega Planet Battles (2025). Ultra Mega Planet Battles is currently ~80% cheaper on Steam than Astronimo (2.99 USD vs. 14.99 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 Ultra Mega Planet Battles
Choose Ultra Mega Planet Battles if you want an Action and Indie experience. On Steam, it's currently about 80% cheaper on the Steam Store. Ultra Mega Planet Battles launched in 2025.
Both Astronimo and Ultra Mega Planet Battles sit in Adventure on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen 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
 Astronimo |  Ultra Mega Planet Battles | |
|---|---|---|
| Released | 2023 | 2025 |
| Genres | Adventure, Simulation | Action, Indie, Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 14.99 USD | 2.99 USD |
| Steam reviews | 80% positive (25 reviews) | 1 reviews |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Coatsink | Solindie Games |
Side by side
- Both are Adventure games on Steam.
- Astronimo (2023) is 2 years older than Ultra Mega Planet Battles (2025).
- Ultra Mega Planet Battles is currently ~80% cheaper on Steam than Astronimo (2.99 USD vs. 14.99 USD).
- Both support cooperative play.
- Astronimo is Deck Playable on Steam Deck; Ultra Mega Planet Battles has no Deck rating yet.
Astronimo vs Ultra Mega Planet Battles — FAQ
- Should I play Astronimo or Ultra Mega Planet Battles first?
- If you want chronology, Astronimo (2023) came out before Ultra Mega Planet Battles (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 Astronimo and Ultra Mega Planet Battles similar?
- They overlap on 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 Astronimo and Ultra Mega Planet Battles have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Astronimo ships Online Co-op, Shared/Split Screen Co-op; Ultra Mega Planet Battles ships Shared/Split Screen Co-op, Co-op.
- Does Astronimo run on Steam Deck?
- Yes — Astronimo is rated Deck Playable by Valve. Ultra Mega Planet Battles doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.