$20M+ guaranteed over 171 ACR OSS events, May 11-25, 2026
Main Events & Mystery Bounties for all buy-in levels, leaderboard prizes
No events on Fridays or Saturdays for player flexibility
ACR Poker's Online Super Series runs May 11 to 25, 2026, with $20M guaranteed across 171 events.(credit: ACR Poker)
Americas Cardroom's Online Super Series returns May 11 to 25, 2026 with $20,000,000 guaranteed across 171 events. Buy-ins run from $5.50 to $2,650, there are no events on Fridays or Saturdays, and Mystery Bounty Day 1 flights have been running since April 26. Somebody at ACR has their priorities sorted.
ACR Poker OSS May 2026 Details
Detail
Info
Dates
May 11 to 25, 2026
Total Events
171
Total GTD
$20,000,000+
Buy-Ins
$5.50 to $2,650
Leaderboard
$30,500
No Events On
Fridays and Saturdays
Main Event Buy-Ins
$66, $215, $1,050, $2,650
Mystery Bounty Day 1 flights have been running since April 26. The series skips Fridays and Saturdays, so your playing window runs Sunday through Thursday for the full two weeks.
Three Main Events and a Price Point for Every Bankroll
All three flagship Main Events share the same structure: Day 1A on May 17, Day 1B on May 24, and Day 2 on May 25. Best stack from multiple Day 1s carries forward. The series also includes a standalone "Other Main Event" at $66 with a $250,000 guarantee, firing Sunday May 24 at 11:30 ET.
Event
Buy-In
GTD
Day 1A
Day 2
OSS High Main Event
$2,650
$1,500,000
May 17
May 25
OSS Medium Main Event
$1,050
$1,500,000
May 17
May 25
OSS Low Main Event
$215
$1,000,000
May 17
May 25
OSS Multi-Flight Main Event
$630
$1,000,000
May 11
May 25
Five price points. Five different shots at a Main Event final table on May 25.
The ACR OSS Mystery Bounty Flights Nobody Told You Were Already Running
Mystery Bounties are part of how ACR operates and the OSS delivers three levels of them. The Dual Mystery Bounty Venoms just wrapped up in April 2026 with some notable paydays. The OSS picks up where they left off, with flights already live at every buy-in tier.
Event
Buy-In
GTD
Flights
Day 2
Mystery Bounty
$109
$750,000
April 26 to May 25
May 25
Mystery Bounty
$33
$150,000
April 26 to May 24
May 24
Mystery Bounty
$6
$75,000
April 26 to May 24
May 24
A $5.50 entry into a $75,000 guaranteed field with a mystery bounty on every player is worth a look. The $109 level at $750,000 GTD is where the serious overlay potential lives.
$30,500 Up for Grabs In OSS May 2026 Leaderboard
The $30,500 OSS leaderboard runs the full two weeks and rewards volume, not just results. Points stack automatically from every tournament entered across all buy-in tiers. Consistent play compounds into real prize money regardless of individual results. The previous OSS XL leaderboard paid its top finisher $15,000 on top of regular cash winnings, with separate High, Medium, and Low tier prizes distributed throughout. This is either good news or a reason to clear your schedule for two weeks. Possibly both.
The Last OSS XL Finished $10M Over GTD
The March 2026 OSS XL drew 569,903 entries from 128 countries and paid out over $60M against a $50M guarantee. The May regular edition runs at a fraction of that scale. The structure, prize mechanic, and track record are identical.
Event
Entries
Winner
Top Prize
$2,650 OSS XL Main Event
994
Rushgold
$480,796
$1,050 OSS XL Main Event
2,298
DificilHein
$304,208
$215 OSS XL Main Event
5,159
manuelmpc
$151,557
$109 Sunday Moneymaker
4,225
PERRYNELL
$64,418
ACR Poker OSS Highlight Schedule: Where the Money Lands Each Day
Date
Standout Events
Top GTD
May 11
Series opens, Multi-Flight Main Day 1 fires
$200,000
May 12
Mystery Bounty flights, Loncar Daily Doubles
$100,000
May 13
6-Max PKO block, PLO8 events
$100,000
May 14
High Roller PKO $630, $200K GTD
$200,000
May 15
$200K GTD ($630 and $2,650), $100K PKO ($1,050)
$200,000
May 16
No events
May 17
No events
May 17
Main Event Day 1A all three buy-ins, $600K GTD block
$1,500,000
May 18
$200K GTD ($1,050), $100K PKO ($630)
$200,000
May 19
Mystery Bounty 6-Max block, $100K GTD ($630)
$100,000
May 20
PLO8 Mystery Bounty block, $75K GTD ($630)
$75,000
May 21
$200K GTD ($630 and $2,650), $100K PKO ($1,050)
$200,000
May 22
No events
May 23
No events
May 24
Main Event Day 1B all three buy-ins, Other Main $66, Mystery Bounty finals
$1,500,000
May 25
All Day 2s: $1.5M Mains x2, $1M Main, $750K Mystery Bounty
171 Events, No Fridays, No Saturdays: There Are Worse Ways to Spend Two Weeks
The OSS runs May 11 to 25 with $20M guaranteed, buy-ins from $5.50 to $2,650, and a schedule that respects the fact that most players have a life outside the client. Twelve playing days, three Major Main Events, four Mystery Bounty multi-flights, and a $30,500 leaderboard that rewards anyone willing to put in the volume.
May 25 is the series finale with every major Day 2 running simultaneously, making it one of the bigger single days on ACR's calendar this spring. The OSS XL beat its guarantee by $10M in March. The regular edition has earned the same expectation.