engine: proprietary

• type: polygon terrain
• atmospheric/environmental effects
  • water: bubbles, ripples, underwater distortion
  • weather: moving clouds (3dfx only?), fog
  • other: light-shifting ground, looking at sun brightens screen, blood drop trails
• collision detection: 2D
• environment mapping: weapons
• inverse kinematics
• particle effects: blood drops, water bubbles
• shadows: dinosaurs, body shape, vertical angle adjustment

player character: slows when weapon drawn

• moves: call, crouch, ready/holster weapon, run, shoot, walk

NPCs:

• animals/enemies: dinosaurs; breathe (body expands/contracts)