Purchase sound effects, royalty-free and cleared for commercial work. 6 libraries carry this tag, most of them filed under Interfaces and Game Audio Bundles.
Recordists here also tag Coin, Menu and Notification, which is worth a look if nothing below fits.
A collection of cute, modern user interface sound effects for menus, notifications, navigation, and HUDs, designed to enhance user experience in games and applications.
Professional collection featuring 678 high-quality sound effects spanning tower defense and strategy games, including combat impacts, defensive structures, and enemy alerts across 13 distinct categories in 96kHz/24bit format.
Military-themed sound effects library featuring 1750+ authentic audio elements, from gear movements to class-specific notifications, designed for combat gameplay experiences and user interface applications.