Original: According to Microsoft, first-day sales of Halo 3 reached $170 million in the U.S., setting a record for highest gross of an entertainment product within 24 hours of its release. The performance beat the previous record setterâ "Halo 2 â" which earned $125 million within 24 hours after its launch.
Simplified: Halo 3 sales reached $170 million within 24 hours, making it the biggest selling entertainment product launch in US history.