Simplify the following text for a Grade 7 native English-speaking person.
Original: Despite positive critical acclaim , System Shock and System Shock 2 both failed to achieve the expected commercial success unlike BioShock which was both a critical and commercial success .
Simplified: System Shock and System Shock 2 both got good reviews , but both failed to get the expected commercial success . Unlike BioShock , which was both a reviewer and commercial success .