Your zone to play free online Ninja Games no download at Round Games. Our ninja games feature a variety of game types, including action, adventure, fighting, and stealth. Use just your keyboard to sneak through levels, hop over opponents, slide under obstacles, and swing your fists of fury! If you wish, view the instructions included in each game and learn how to devastate your enemies. There is little-to-no learning curve for most warrior games, meaning you can fight like a pro and attempt to beat challenging levels in no time! With so many options available, you’ll feel like a real ninja. We have collected some of the best free online Ninja Games to play now without download on Round Games. These games include browser games for both your computer and mobile devices. Enjoy and have fun in playing these free online games.