The OSS XL is ACR Poker’s flagship online festival, running March 1 to 23 and packing more than 750 tournaments across the widest range of buy‑ins you will find online.
ACR Poker is serving up everything from micros to $10,300 high rollers. With three huge Main Events, mystery bounty multi‑flights and a $65,000 leaderboard, there’s plenty of value left on the schedule for grinders who want a slice of the $50 million up for grabs.
ACR Pro Chris Moneymaker was clearly eager to get stuck in:
“It’s great to see the OSS XL back in action, offering something for everyone and bringing the community together. There are buy-ins to suit all bankrolls and skill levels, huge guarantees, and tons of value across the schedule, from the main events to the mystery bounties.
“Plus, the leaderboard gives you a reason to show up every day. It’s one of ACR Poker’s standout series, and I can’t wait to jump in this March.”
Series Highlights
Across the first stretch of the OSS XL, the schedule has already rolled out a mix of regular MTTs, PKOs, PLO events and the first waves of the multi-entry mystery bounty flights. Action‑hungry players have had so much choice to fire at they will be struggling to cope.
The early events of the OSS XL have already given grinders deep structures, big guarantees and tons of soft spots created by the sheer volume of side events running alongside the headliners.
The spotlight early on was Phil’s Thrill XXL, a $10,300 buy‑in high roller with a massive $1.5 million guaranteed prize pool that kicked off the series and set the tone for the big ones that are to come.
Three Monster Main Events Still to Come
For most players, the real draw of OSS XL is the trio of monster Main Events that close out the series. All three share the same structure, with Day 1 flights on consecutive Sundays and a combined Day 2 on Monday, March 23.
| Event | Date(s) | Buy‑in | Guarantee |
| OSS XL Main Event High | March 15 & 22 (Day 1s), 23 (Day 2) | $2,650 | $2,000,000 |
| OSS XL Main Event Medium | March 15 & 22, 23 | $1,050 | $2,000,000 |
| OSS XL Main Event Low | March 15 & 22, 23 | $215 | $1,000,000 |
| $630 Multi‑Flight | March 1–23 | $630 | $1,500,000 |
Alongside the Main Events, there is also a $630 multi‑flight tournament with a more than handsome $1.5 million guarantee. Flights will be running throughout the series with Day 2 coming on March 23.
This structure is ideal for the volume players who never take a minute’s rest, letting them fire multiple bullets in the starting days around their regular grind schedule.
Mystery Bounties and $65k Leaderboard Value
This edition of the OSS XL leans hard into the popular mystery bounty boom, with five dedicated multi‑flight bounty tournaments on the slate.
These include three $500,000 guaranteed events with a $109 buy‑in, a $150,000 guaranteed event costing only $33 to enter, and a $100,000 guaranteed event for just $5.50, giving every bankroll level a shot at pulling a life‑changing mystery envelope.
On top of the regular prize pools, there’s an extra $65,000 in value up for grabs on the OSS XL leaderboard, spread across separate Low, Mid and High buy‑in tiers.
Simply cashing in OSS XL events earns you points, with additional prizes for the top performers at each level. This is great news for the grinders who aim at consistency and might not bink a headline score but can still climb into the big bucks through volume alone.
Plenty of Action Still to Come
With two weeks still to go, OSS XL is yet to reach its peak, and there’s still a full slate of big-guarantee events, multi‑flight Day 1s and satellites to come.
Whether you’re targeting the $215 “classic” Main Event, shot‑taking in the $1,050 or $2,650, or grinding the low‑buy‑in mystery bounties and leaderboard points, ACR Poker is where you need to be this March if you’re looking for a US‑facing poker site.
