Io, which means ‘Indian Ocean.’ The top level domain extension is well-known with computer software engineers given that IO is short for 'Enter / Output', a typical phrase in computing. Suroi is actually a 2D battle royale with quite a few activity modes and dozens of weapons to choose from. https://iobattlegamesfree06048.blogocial.com/what-does-io-battle-games-free-mean-73007474