Choose Retrograde Arena
Choose Retrograde Arena if you want a Free To Play game with Online PvP and LAN PvP. On Steam, it's free to play, so the barrier to trying it is zero. Retrograde Arena launched in 2020.
Retrograde Arena vs Invaders X
Retrograde Arena and Invaders X both land in Action, 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 Action, Indie on Steam. Retrograde Arena is free; Invaders X is paid (Price unknown). Invaders X has co-op; Retrograde Arena does not. 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 X
Choose Invaders X if you want a Casual game with Shared/Split Screen Co-op, DualShock Controller Support, and Co-op. On Steam, it has co-op, so you can bring a friend.
Both Retrograde Arena and Invaders X sit in Action and Indie on Steam and both list Multi-player, Shared/Split Screen, and Shared/Split Screen PvP, 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
 Retrograde Arena |  Invaders X | |
|---|---|---|
| Released | 2020 | — |
| Genres | Action, Indie, Free To Play | Action, Indie, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 90.8% positive (141 reviews) | — |
| Multiplayer | Multi-player | Multi-player, Shared/Split Screen Co-op, Co-op |
| Developers | Freemergency | Ideias 5D |
Side by side
- Both share Action, Indie on Steam.
- Retrograde Arena is free; Invaders X is paid (Price unknown).
- Invaders X has co-op; Retrograde Arena does not.
- Retrograde Arena is Deck Playable on Steam Deck; Invaders X has no Deck rating yet.
Retrograde Arena vs Invaders X — FAQ
- Are Retrograde Arena and Invaders X similar?
- They overlap on Action, 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.
- Is Retrograde Arena free?
- Yes — Retrograde Arena is a free-to-play Steam title. Invaders X is paid (Price unknown).
- Does Retrograde Arena run on Steam Deck?
- Yes — Retrograde Arena is rated Deck Playable by Valve. Invaders X doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.