OSM turns 25. Join the biggest birthday celebration yet!

OSM is turning 25, and you’re invited to the party! For 25 years, managers around the world have made legendary transfers, tried wild tactics and chased unforgettable championships. Whether you're a returning boss or brand new to OSM, now is the perfect time to celebrate with special Birthday players, exclusive rewards, festive events and more. The birthday party is on. Join the celebration and show you've got what it takes to be a boss!