Choose Polygons Tower Defense
Choose Polygons Tower Defense if you want an Action and Casual game with Steam Leaderboards. Polygons Tower Defense launched in 2023.
Polygons Tower Defense vs Invaders Tower Defense Online
Polygons Tower Defense and Invaders Tower Defense Online both land in Strategy, Early Access 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, Early Access on Steam. Polygons Tower Defense (2023) is 1 year older than Invaders Tower Defense Online (2024). Invaders Tower Defense Online is currently ~50% cheaper on Steam than Polygons Tower Defense (1.49 USD vs. 2.99 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 Invaders Tower Defense Online
Choose Invaders Tower Defense Online if you want an Indie experience. On Steam, it's currently about 50% cheaper on the Steam Store. Invaders Tower Defense Online launched in 2024.
Both Polygons Tower Defense and Invaders Tower Defense Online sit in Strategy and Early Access 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
 Polygons Tower Defense |  Invaders Tower Defense Online | |
|---|---|---|
| Released | 2023 | 2024 |
| Genres | Action, Strategy, Casual, Early Access | Strategy, Indie, Early Access |
| Platforms | Windows | Windows, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 2.99 USD | 1.49 USD |
| Steam reviews | 5 reviews | 3 reviews |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Online Co-op, Co-op |
| Developers | Rodrigo Neiva Santiago | Sagui Games |
Side by side
- Both share Strategy, Early Access on Steam.
- Polygons Tower Defense (2023) is 1 year older than Invaders Tower Defense Online (2024).
- Invaders Tower Defense Online is currently ~50% cheaper on Steam than Polygons Tower Defense (1.49 USD vs. 2.99 USD).
- Both support cooperative play.
- Polygons Tower Defense is Deck Playable on Steam Deck; Invaders Tower Defense Online has no Deck rating yet.
Polygons Tower Defense vs Invaders Tower Defense Online — FAQ
- Should I play Polygons Tower Defense or Invaders Tower Defense Online first?
- If you want chronology, Polygons Tower Defense (2023) came out before Invaders Tower Defense Online (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 Polygons Tower Defense and Invaders Tower Defense Online similar?
- They overlap on Strategy, Early Access 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 Polygons Tower Defense and Invaders Tower Defense Online have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Polygons Tower Defense ships Online Co-op, Co-op; Invaders Tower Defense Online ships Online Co-op, Co-op.
- Does Polygons Tower Defense run on Steam Deck?
- Yes — Polygons Tower Defense is rated Deck Playable by Valve. Invaders Tower Defense Online doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.