Intrusion 2 vs Serious Sam: The First Encounter
Side-by-side comparison of features, pricing, ratings, and alternatives.

Intrusion 2 is an action platformer set on a reserve planet where a hostile military corporation conducts forbidden weapon research. Inspired by classic 16‑bit side‑scrollers, it blends nostalgic pixel art with modern physics and smooth animation. The game delivers single‑player, fast‑paced shooter gameplay across Linux, PC, and Mac, offering a challenging sci‑fi experience for fans of retro action titles.
Serious Sam: The First Encounter is a classic first‑person shooter that delivers relentless action across sprawling, open arenas. Developed by Croteam, the game challenges players to survive wave after wave of bizarre enemies with a massive arsenal of weapons. The title features both single‑player and multiplayer modes, including co‑operative play, allowing friends to team up and tackle the chaos together. Its sci‑fi setting and over‑the‑top combat have made it a beloved indie shooter since its 2001 release.
- Authentic 16‑bit visual style
- Modern physics adds depth to classic platforming
- Cross‑platform support for Linux, PC, and Mac
- Engaging sci‑fi narrative
- Non‑stop, high‑octane action
- Large variety of weapons
- Robust co‑op multiplayer
- Engaging retro aesthetic
- Limited to single‑player only
- No multiplayer or co‑op modes
- Short overall campaign length
- Limited narrative depth
- Graphics may feel dated to modern players
- No official console ports
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Fast‑paced, over‑the‑top shooter that pits Sam against endless alien hordes.
The Verdict
AI-generated from listing dataSerious Sam: The First Encounter delivers expansive, fast‑paced shooter action with co‑op multiplayer at a higher price, while Intrusion 2 offers a cheap, retro‑style single‑player platformer experience.
Key differences
- •Multiplayer: Serious Sam supports up to 4‑player co‑op; Intrusion 2 is single‑player only.
- •Genre focus: Serious Sam is a classic arena FPS; Intrusion 2 is a platformer with shooting elements.
- •Price: Serious Sam costs $39.99; Intrusion 2 costs $9.99.
- •Graphics style: Serious Sam uses retro‑style 3D with modern lighting; Intrusion 2 uses pixel‑art 16‑bit visuals.
- •Content volume: Serious Sam offers large open maps, many weapon types and enemy varieties; Intrusion 2 has a shorter, handcrafted level set.
Gameplay & fun factor
Serious Sam provides nonstop arena shooting with many weapons and enemy types, whereas Intrusion 2 is limited to platforming.
Platform availability
Intrusion 2 explicitly supports Linux, PC, and Mac; Serious Sam lists only PC.
Price & value
Intrusion 2 costs $9.99 versus Serious Sam's $39.99, offering lower upfront cost.
Multiplayer / co‑op
Serious Sam includes co‑op for up to four players; Intrusion 2 has no multiplayer.
Content & replayability
Serious Sam features large open environments, many weapons, and scoring incentives encouraging replay; Intrusion 2 has a short campaign.
Difficulty & accessibility
Both list multiple difficulty settings or skill‑based challenges, but specific difficulty details are not provided.
Graphics & performance
Serious Sam combines retro 3D visuals with modern lighting; Intrusion 2 uses pixel‑art, which may appeal less to FPS fans.
Choose Intrusion 2 if…
Buy Intrusion 2 if you prefer a cheap, single‑player retro platformer and need Linux/Mac support.
Choose Serious Sam: The First Encounter if…
Buy Serious Sam if you want co‑op shooter action and more content, and are okay with a higher price.
Common questions
Which game supports multiplayer?
Serious Sam: The First Encounter supports up to four‑player co‑op; Intrusion 2 is single‑player only.
Is there a Linux version?
Intrusion 2 lists cross‑platform support for Linux, PC, and Mac; Serious Sam lists only PC.
What is the price difference?
Serious Sam costs $39.99, while Intrusion 2 costs $9.99.




