Joy of 40 Million! is the first and only stage in the event-chapter "40 Million Celebration Gifts Galore!"
40 Million DL Birthday Cake appears as a boss.
- As with the 20 million and 30 million downloads stages, it's best to use fast cats such Cow Cat or Crazed Cow Cat to easily rush the stage, as the Cake enemy is Metal and you want to maximize your hits per second as much as possible.
- The Birthday Cake does virtually no damage, making it unnecessary to spawn meatshields.
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