Choose Space Invaders Extreme
Choose Space Invaders Extreme if you want the Steam Leaderboards side of the pairing. On Steam, it's Steam Deck Verified, so handheld play works out of the box. Space Invaders Extreme launched in 2018.
Space Invaders Extreme vs Alien Crusader
Space Invaders Extreme and Alien Crusader both land in Action 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 are Action games on Steam. Both released in 2018. Space Invaders Extreme scores higher on Steam reviews (83.1% positive) than Alien Crusader (54.8% positive). 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 Alien Crusader
Choose Alien Crusader if you want an Indie and Free To Play experience. On Steam, it's free to play, so the barrier to trying it is zero. Alien Crusader launched in 2018.
Both Space Invaders Extreme and Alien Crusader sit in Action 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
 Space Invaders Extreme |  Alien Crusader | |
|---|---|---|
| Released | 2018 | 2018 |
| Genres | Action | Action, Indie, Free To Play |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 4.99 USD | Free to play |
| Steam reviews | 83.1% positive (154 reviews) | 54.8% positive (42 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | TAITO CORP. | Zydrone |
Side by side
- Both are Action games on Steam.
- Both released in 2018.
- Space Invaders Extreme scores higher on Steam reviews (83.1% positive) than Alien Crusader (54.8% positive).
- Alien Crusader is free; Space Invaders Extreme is paid (4.99 USD).
- Space Invaders Extreme is Deck Verified on Steam Deck; Alien Crusader has no Deck rating yet.
Space Invaders Extreme vs Alien Crusader — FAQ
- Are Space Invaders Extreme and Alien Crusader similar?
- They overlap on Action 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 Alien Crusader free?
- Yes — Alien Crusader is a free-to-play Steam title. Space Invaders Extreme is paid (4.99 USD).
- Does Space Invaders Extreme run on Steam Deck?
- Yes — Space Invaders Extreme is rated Deck Verified by Valve. Alien Crusader doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.