The recently concluded Call of Duty: Modern Warfare beta test has set multiple new franchise records for a Call of Duty beta. According to Activision, it was the "largest [beta] in Call of Duty history."

Some of its achievements included:

• Highest total number of users
• Highest number of hours played
• Highest peak concurrent number for PS4, Xbox One, and PC combined

Activision said "millions" of people played the beta. The pre-release test was held over multiple weekends in September, beginning on PS4 before coming to Xbox One and PC. Those who pre-ordered the game were invited in first, before Activision opened the beta to everyone.

The second weekend's beta test was a big one, as it introduced the 64-player Ground War mode and cross-play support that allowed people on different platforms to play together. Additionally, it was discovered that Modern Warfare supports cross-saves between competing systems, so you can play on PS4 and move to Xbox One (or PC) and keep your progression and levels intact.

Infinity Ward boss Patrick Kelly said in a statement that Modern Warfare beta gave the studio "important data and feedback" to help improve the game at launch on October 25.

Activision's statement went on to reiterate that Modern Warfare's multiplayer may introduce a mode or multiple modes that support up to 100 players, though whether or not this will be a battle royale mode remains to be seen.

Modern Warfare was co-developed by Beenox, High Moon Studios, and Raven Software. Additionally, it appears Call of Duty: WWII developer Sledgehammer's new Melbourne, Australia studio contributed to the engineering work that made Modern Warfare's Ground War mode possible.