These are features the player interacts with while playing the game. These generally affect the game experience.
“Difficulty levels determine the power and quantity of the Ravagers, and, in Insect Armageddon...Difficulty Levels
“Zero-Kill XP is the amount of experience a player gains by completing checkpoints during a...Zero-Kill XP
“Many times throughout the series, stronger variations of enemies have appeared; many times...Elite
This category has the following 2 subcategories, out of 2 total.