Choose Paper Protocol
Choose Paper Protocol if you want an Indie experience. On Steam, it's currently about 50% cheaper on the Steam Store. Paper Protocol launched in 2024.
Paper Protocol vs Doomsday Tower Defense
Paper Protocol and Doomsday Tower Defense both land in Strategy, Simulation, 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 Strategy, Simulation, Casual on Steam. Paper Protocol (2024) is 1 year older than Doomsday Tower Defense (2025). Paper Protocol is currently ~50% cheaper on Steam than Doomsday Tower Defense (7.99 USD vs. 15.99 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 Doomsday Tower Defense
Choose Doomsday Tower Defense if you want an Action experience. Doomsday Tower Defense launched in 2025.
Both Paper Protocol and Doomsday Tower Defense sit in Strategy, Simulation, 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
 Paper Protocol |  Doomsday Tower Defense | |
|---|---|---|
| Released | 2024 | 2025 |
| Genres | Strategy, Indie, Simulation, Casual | Action, Strategy, Simulation, Casual |
| Platforms | Windows, macOS | Windows, macOS |
| Steam Deck | Unrated | Unrated |
| Price | 7.99 USD | 15.99 USD |
| Steam reviews | — | 2 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Dairy Devs | Urban Isotope |
Side by side
- Both share Strategy, Simulation, Casual on Steam.
- Paper Protocol (2024) is 1 year older than Doomsday Tower Defense (2025).
- Paper Protocol is currently ~50% cheaper on Steam than Doomsday Tower Defense (7.99 USD vs. 15.99 USD).
Paper Protocol vs Doomsday Tower Defense — FAQ
- Should I play Paper Protocol or Doomsday Tower Defense first?
- If you want chronology, Paper Protocol (2024) came out before Doomsday Tower Defense (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 Paper Protocol and Doomsday Tower Defense similar?
- They overlap on Strategy, Simulation, 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.