Google は、黒人コミュニティのための人種的公平の促進に取り組んでいます。詳細をご覧ください。
Halfbrick ロゴ
Halfbrick uses Firebase Predictions to boost retention by 20%
Screenshot of Halfbrick


Halfbrick Studios is a professional game development studio based in Brisbane, Australia. Founded in 2001, Halfbrick has developed many popular games, including Fruit Ninja, Jetpack Joyride, and Dan the Man.


When Halfbrick first learned about Firebase Predictions, they were excited about targeting users based on predicted behavior, rather than historic. Re-engagement is tough, so intervening before a user churned—based on predictions instead of ad hoc heuristics—seemed like a strong strategy

They had been trying to create their own churn prediction models, but like many companies, didn't have the time or resources to properly devote to the problem. Even once they had a prediction model, they found it time-consuming to change the in-app experience on a user-by-user basis.

Screenshot of Halfbrick


Halfbrick already had Firebase Remote Config implemented in their game Dan the Man, so they decided to try Predictions there. They set up a 3-variant experiment testing whether they could boost retention by offering a pop-up with a gift of in-game currency.

Group 0 was the control and received no promotion. Users in Group 1 received the in-game gift based on Halfbrick's existing heuristic: beating level 3. Finally, users in Group 2 received the gift if they were identified by Predictions as 'will churn'. These are the results that Halfbrick saw:

Halfbrick Image

By serving the in-game promotion to users who were predicted to churn, Halfbrick boosted their 7-day retention for that group by 5 percentage points, which equated to a 20% boost. With the success they've seen in Dan the Man, Halfbrick is excited to test out Predictions in their other titles.


20% boost in 7-day active users

Halfbrick ロゴ

"テストの結果に基づいて、ゲーム内プロモーションをユーザーベース全体に公開することに決めました。現在、Predictions が「離脱の可能性あり」と特定したユーザーには、ゴールドコイン 2,000 枚とガチャトークン 25 枚が贈られます。他のタイトルでも Predictions を試してみるのが楽しみです。"

- Miguel Pastor 氏、Halfbrick 社、開発者