gptkbp:game_mechanics
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gptkb:award
gptkb:soundtrack
gptkb:museum
Level design
Leaderboards
Speed control
Replayability
Level progression
Difficulty settings
Score system
Boss encounters
Weapon selection
Enemy patterns
Lives system
Power-up selection
Continue system
Endurance against waves of enemies
Horizontal scrolling
Multiple weapon types
Power meter
Shield system
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