Game-Day Challenge: how the rewards work
A month-long challenge in ACBL robot games
Play 12-board and 18-board games through the day. Your results set your place on the Daily Leaderboard, and your month builds toward badges that pay SB Credits.
How a playing day works
A new Game-Day starts at 4:00 AM Eastern Time.
Play the 12-board and 18-board games at your own pace, with as many breaks as you like. The featured 18-board game carries more weight in the daily ranking.
Finish what you start. Abandoned games carry a penalty.
Results are final after the playing day ends. Your recap email shows your results and the badges you earned.
Two leaderboards
Daily Leaderboard
Your qualifying results combine into EXP, your performance score for the day. A strong daily finish can earn extra online Masterpoints on top of the Masterpoints from the games. The leaderboard Masterpoint program currently runs through December 31, 2026.
Monthly Leaderboard
Adds up your days, games and EXP across the month. After month end, 1st place earns 20 SB Credits, 2nd to 5th earn 10 each, and 6th to 25th earn 5 each.
Monthly badges
Each badge type pays once a month, after month end. Arena shows your progress toward each one.
Daily Devotee
Play on at least 20 days in the month. 4 SB Credits.
Power Player
Play at least 60 games in the month. 8 SB Credits.
Streak Master
Play at least three games a day for seven days in a row. 4 SB Credits.
Peak Performer
Reach 1,300 monthly EXP. 8 SB Credits.
Daily Champion
Finish first on at least one day. 4 SB Credits.
Elite Contender
Finish in the Top 3 on at least three days. 4 SB Credits.
Top 10 Regular
Finish in the Top 10 on at least eight days. 4 SB Credits.
Tier Specialist
Finish in the Top 5 for five days in a row. 8 SB Credits.
Red, Silver and Gold Days
On the 10th, 11th and 12th of each month, the featured 18-board Game-Day event includes a 10% award in that day's color: Red, Silver or Gold. The program is currently scheduled through December 2026.
Start free#
Every Shark account comes with 5 free SB Credits, enough for two 12-board games or one 18-board game. ACBL members with fewer than 5 lifetime Masterpoints play 12-board games free.
Game-Day questions
When does a Game-Day end?
At 4:00 AM Eastern Time. Game-Day Masterpoints are reported to ACBL after the daily games close.
Do I have to play every game?
No. More good games can help your daily ranking, but they do not guarantee a higher finish.
When are badge credits paid?
After month end, once results are final. Each badge type pays once a month.
Where do I see my progress?
Open Game-Day Challenge in Arena to see today's performance, monthly totals, leaderboards and badge trackers.