XS Software JSCo is a Bulgarian worldwide producer, developer and publisher of cross platform multiplayer online games.

The company was founded in 2004 by entrepreneur Hristo Tenchev, who is also the CEO[1] and created the first Bulgarian online browser game Bulfleet.

After the success of the game, the team started working on more projects and the company [2] continued to grow.

[3] The game was first released in Poland with the support of one of the biggest horizontal portals, Wirtualna Polska.

The company translated its best performing games in up to 40 languages and they were subsequently released in 80 countries.