Main
3 vs 3
Best of three
Small map, exactly 6 players, no revives. The first team to win two rounds takes the match.
6 players
02Heroes
Choose who to play
St. Lone
ShooterA widely known athlete and actor. Signed a lifetime contract with OSA. Powerful and straightforward, with an almost childlike belief in good. Acts from the heart, not by calculation.
03About
The biggest show in the galaxy
The OSA corporation has gathered legends from all over the galaxy in one arena: action stars, mages, androids and those you'd better not ask about. Cameras are rolling — the show begins.
- Free to play
- 6 heroes
- 2 modes
- Party with friends
04Modes
Game modes
Survival
Up to 20 players · solo & duo
Dogs and zombies roam the map. Kill mobs, grab XP, damage and health boosts — and be the last one standing.
20 players
05Leagues
League ladder
Compete, win and climb higher
#8Juniors
#7Players
#6Fighters
#5Experienced
#4Assassins
#3Legends
#2Titans
#1PRO
-
Hero's Path
Collect cups and unlock rewards
-
Quests
Daily and weekly
-
Old School Pass
Rewards for every level, with a free track
06Trailer
The show is live
07Download
Get OSA
Free on Android. iOS is in development.
Google PlaySoon
App StoreSoon
08FAQ
How do I install the APK?
Tap “Download APK” and open the file from the notification or your Downloads folder. Your phone will ask to allow installs from this source — allow it; you can turn the permission off afterwards.
Is it safe?
Yes. The APK on this site is the same build as in RuStore, signed with the developer's key. Only download the game from oldschoolarena.net or RuStore — we don't check copies from other sites.
Will there be an iPhone version?
Yes, the iOS version is in development. We'll announce the release in our Telegram channel.
Is the game free?
Yes, OSA is free to download and play.
How big is the game?
The installer is about 244 MB. On first launch the game downloads some extra resources, so Wi-Fi is recommended.