Deus Ex Genre: Immersive Sim (Action RPG / FPS / Stealth Hybrid)

Deus Ex (2000) is the definitive Immersive Sim — a hybrid genre defined by:

Systems-Driven Gameplay: Interlocking mechanics (physics, AI, hacking, conversation, combat) allow emergent solutions.
Player Agency: Multiple paths (Combat / Stealth / Hacking / Social) to every objective. No "wrong" build.
Persistent World: Levels are large, non-linear hubs. Choices persist (NPCs live/die, lore changes).
RPG Progression: Skill points (Accuracy, Hacking, Lockpicking, etc.) + Augmentations (Cloak, Regen, Vision, Strength).

Element	Implementation
First-Person Shooter	Gunplay, recoil, headshots, weapon mods. But low accuracy until skilled.
Stealth	Light/sound meters, leaning, silent takedowns, vision cones. Viable full ghost run.
Role-Playing	Dialogue trees, faction reputation, exploration XP, build diversity (Sniper/Hacker/Tank).
Immersive Sim	Simulation of systems (fire burns, gas explodes, electricity stuns). "Play your way."

Deus Ex (2000): PC/PS2. Masterpiece. GMDX / Revision mods essential today.
Invisible War (2003): Simplified, smaller levels. Controversial.
Human Revolution (2011): Cover shooter + takedowns. Director's Cut fixes boss fights.
Mankind Divided (2016): Refined HR. Prague hub. Breach mode (arcade).
The Fall (2013): Mobile/PC. Canon but minor.

If you like: Dishonored, Prey (2017), System Shock, Thief, Cyberpunk 2077 — you'll love Deus Ex.

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