Choose Door Kickers
Choose Door Kickers if you want an Action and Simulation experience. 3,617 Steam reviews back the pick.
Door Kickers vs Doomsday Defense Line
Door Kickers and Doomsday Defense Line both land in 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 Strategy, Indie on Steam. Door Kickers (2014) is 12 years older than Doomsday Defense Line (2026). Doomsday Defense Line is free; Door Kickers 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 Doomsday Defense Line
Choose Doomsday Defense Line if you want an Adventure, Free To Play, and Casual game with Online PvP and PvP. On Steam, it's free to play, so the barrier to trying it is zero. Doomsday Defense Line launched in 2026.
Both Door Kickers and Doomsday Defense Line sit in Strategy and Indie on Steam and both list Multi-player, Online Co-op, and 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
 Door Kickers |  Doomsday Defense Line | |
|---|---|---|
| Released | 2014 | 2026 |
| Genres | Action, Strategy, Indie, Simulation | Strategy, Indie, Adventure, Free To Play, Casual |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 19.99 USD | Free to play |
| Steam reviews | 92.9% positive (3,617 reviews) | — |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Cross-Platform Multiplayer, Online Co-op |
| Developers | KillHouse Games | 上海齐格飞网络科技有限公司 |
Side by side
- Both share Strategy, Indie on Steam.
- Door Kickers (2014) is 12 years older than Doomsday Defense Line (2026).
- Doomsday Defense Line is free; Door Kickers is paid (19.99 USD).
- Both support cooperative play.
- Door Kickers is Deck Playable on Steam Deck; Doomsday Defense Line has no Deck rating yet.
Door Kickers vs Doomsday Defense Line — FAQ
- Should I play Door Kickers or Doomsday Defense Line first?
- If you want chronology, Door Kickers (2014) came out before Doomsday Defense Line (2026). 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 Door Kickers and Doomsday Defense Line similar?
- They overlap on 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.
- Do both Door Kickers and Doomsday Defense Line have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Door Kickers ships Online Co-op, Co-op; Doomsday Defense Line ships Online Co-op, Co-op.
- Is Doomsday Defense Line free?
- Yes — Doomsday Defense Line is a free-to-play Steam title. Door Kickers is paid (19.99 USD).
- Does Door Kickers run on Steam Deck?
- Yes — Door Kickers is rated Deck Playable by Valve. Doomsday Defense Line doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.