Nexon (co-CEOs Kang Dae-hyun and Kim Jung-wook) has introduced a wide array of new content and events, including the special trading feature 'Black Market' and 2v2 Party Ranked Matches, to celebrate the 21st anniversary of its online FPS Sudden Attack.

The newly introduced Black Market is a special feature that allows players to buy and sell items previously untradeable on the Flea Market, operating temporarily for two weeks until September 3. Tradeable items automatically refresh sequentially upon logging in, and permanent items currently in use—such as dog tags and rank borders—can also be traded using sealing items.

In the Ranked Match system, 2v2 Party Ranked Matches will be available until September 17. Matches will take place on dedicated battlegrounds as well as new Demolition battlegrounds, 'The Mall' and 'Line', featuring a map preference selection system and party RP sharing. Related challenge quests will also run simultaneously until September 3.

The progression content 'Combo Pass: 21st Two as One' will also be open until September 3. It can be activated using '21st Anniversary Tokens' at the '21st Anniversary Special Exchange', providing exclusive rewards such as the '[S] Jan Hawk & Misha Hawk Guaranteed Ticket' and up to 300% bonus EXP. Players who also own the 'Sudden Pass' will unlock an additional 'Combo Boost' track, allowing them to obtain the 'Permanent Specter(MG+) 21st' upon reaching the maximum level of 30.

Abundant events to earn '21st Skin Weapons' are also underway. The 'Hot Playtime' event, running every day from 7:00 PM to 10:00 PM until September 3, grants 10 '21st Anniversary Tokens' upon completion, along with additional rewards such as 'Permanent 21st Weapon' based on cumulative completions.

The '21st Anniversary Duo Event', running during the same period, rewards players who register a friend and play Demolition and Survival modes together to achieve 21 kills daily, with double rewards on weekends and public holidays. Using the main reward, the '21st Anniversary Jumping Kit', allows players to level up their 'MyGun2' and 'MG+' primary weapons. In addition, the '21st Anniversary PC Cafe Event' from August 22 to 23 offers items such as 'Permanent NA-34 Marble Selection Coupon', 'Permanent MP7 Marble Selection Coupon', and '5,000 Cash Raffle Ticket'.

Birthday celebration events are also taking place. Birthday celebration lobby background music will play until August 27. In the '21st Anniversary Celebration Chat Event' running until August 23, typing specified phrases into the chat grants daily rewards such as 'Permanent Tiger Stripe 21st', 'Carrier Weapon Multi-Count', and '5 Pass Tickets'. The '21st Anniversary Check-in Event', running until September 30, logs attendance after 1 hour of playtime per day, offering additional rewards up to 10 times, including 'Permanent TRG21(IS) 21st', 'MyGun2 Secondary Weapon Half Kit', and 'Permanent Sniper Duration Extension'.

A live showcase will broadcast starting at 5:00 PM on August 23, the anniversary day. Part 1 will feature mission challenges and a 2v2 match between 2026 Championship Season 1 winners 'FINF' and key players from the 'Teddy Cup', followed by Part 2, which includes the weapon skin design contest winner announcement and the birthday party. Coupons will be distributed during the broadcast, and additional rewards will be given to users who complete the '21st Anniversary Medal Combination' event and link their SOOP account. Finally, until August 27, the 'Today's Special Item' shop will offer time-limited sales for items such as the '21st Anniversary Birthday Package' and 'MyGun2 Lv.50 Kit Selection Coupon'.