Madden NFL 2021

Primary Currency: Coins

• Sinks: Purchasing player packs, upgrading players, entering events.
• Faucets: Completing games, completing challenges, selling players on the auction house.
• Flow Speed: Slow. Significant amounts are needed for high-value items often requiring to complete repetitive amounts of games and challenges.

Other Currencies:

• Madden Cash: Used for premium purchases and faster progression. Different from Coins because it is acquired through real money.

F2P Connection:

• You can earn coins through gameplay, but purchasing Madden Cash with real money can significantly speed up progression.

Call of Duty: Black Ops 3

Currency: COD points 

• Sinks: Purchasing skins, battle passes, weapons, and other in-game items.
• Faucets: Completing certain in-game achievements, but primarily through real money purchases.
• Flow Speed: Slow for free-to-play players, as earning COD Points through gameplay is limited.

Other Currencies:

• Credits: Earned through gameplay, used for purchasing basic items. Differ from COD Points as they cannot be used for premium items.

F2P Connection:

• Limited ability to earn COD Points through gameplay. Real money is the main way to acquire more COD Points.

Clash Royale

Primary Currency: Gold

• Sinks: Upgrading cards, buying cards in the shop, entering tournaments.
• Faucets: Winning battles, opening chests, completing quests.
• Flow Speed: Moderate. Regular gameplay rewards a steady flow of gold, real money is better if you want large amounts.

Other Currencies:

• Gems: Used for speeding up chest unlocks, purchasing gold, and buying special offers. Harder to earn through gameplay and often acquired through real money.

F2P Connection:

• Gold can be earned through regular gameplay, but purchasing gems with real money can help you acquire more gold and progress faster.