Choose UpBoll
Choose UpBoll if you want an Early Access experience. On Steam, it's free to play, so the barrier to trying it is zero. UpBoll launched in 2020.
UpBoll vs Cosmic Slime Defense
UpBoll and Cosmic Slime Defense both land in 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 Indie, Casual on Steam. UpBoll (2020) is 4 years older than Cosmic Slime Defense (2024). UpBoll is free; Cosmic Slime Defense is paid (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 Cosmic Slime Defense
Choose Cosmic Slime Defense if you want an Action experience. On Steam, it's the newer release (2024) and ships with the modern feature baseline. Cosmic Slime Defense launched in 2024.
Both UpBoll and Cosmic Slime Defense sit in 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
 UpBoll |  Cosmic Slime Defense | |
|---|---|---|
| Released | 2020 | 2024 |
| Genres | Indie, Casual, Early Access | Action, Indie, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | Free to play | 8.99 USD |
| Steam reviews | 6 reviews | 1 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Morningstar Studios | JCVR |
Side by side
- Both share Indie, Casual on Steam.
- UpBoll (2020) is 4 years older than Cosmic Slime Defense (2024).
- UpBoll is free; Cosmic Slime Defense is paid (8.99 USD).
- UpBoll is Deck Verified on Steam Deck; Cosmic Slime Defense has no Deck rating yet.
UpBoll vs Cosmic Slime Defense — FAQ
- Should I play UpBoll or Cosmic Slime Defense first?
- If you want chronology, UpBoll (2020) came out before Cosmic Slime Defense (2024). 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 UpBoll and Cosmic Slime Defense similar?
- They overlap on 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.
- Is UpBoll free?
- Yes — UpBoll is a free-to-play Steam title. Cosmic Slime Defense is paid (8.99 USD).
- Does UpBoll run on Steam Deck?
- Yes — UpBoll is rated Deck Verified by Valve. Cosmic Slime Defense doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.