Rumble Fighter Rune system

The Rune system allows players to gain stat buffs. Players can gain up to 24 Runes per day, although they can't hold more than 30 at a time. There are several ways to obtain Runes:

• Daily Log ins
• Play any game mode for an hour in a day
• Play 10 games
• Beat adventure mode 5 times
• Spend 500CC
• Spend 10,000 Carats

Players can use the Runes and check various Rune-related information via the Rune book.

Source: http://rumblefighter.gamescampus.com/guide/runesystem