https://checkio.org/
https://vim-adventures.com/
https://www.tynker.com/
https://www.apple.com/swift/playgrounds/
https://www.bloc.io/ruby-warrior#/
https://robocode.sourceforge.io/
https://play.elevatorsaga.com/
https://www.codewars.com/
https://www.codingame.com/start
https://codecombat.com/
https://vim-adventures.com/
https://www.tynker.com/
https://www.apple.com/swift/playgrounds/
https://www.bloc.io/ruby-warrior#/
https://robocode.sourceforge.io/
https://play.elevatorsaga.com/
https://www.codewars.com/
https://www.codingame.com/start
https://codecombat.com/
checkio.org
CheckiO - coding games and programming challenges for beginner and advanced
CheckiO - coding websites and programming games. Improve your coding skills by solving coding challenges and exercises online with your friends in a fun way. Exchanges experience with other users online through fun coding activities