Defense Game TD : Save the Nin is a free-to-play tower defense game developed by 1N1 for Android devices. The game is set in the world of ninjas where the player can defeat monsters and develop their village using shurikens and ninjitsu. The game has a unique selling point, which is its addictive gameplay.

The game has various features that make it stand out from other tower defense games. Players can advance from Bronze to Diamond league by completing endless quests to gain relics. They can also craft all the shurikens from normal to legend level. The game provides the opportunity for players to build numerous strategies using the perks of their shurikens. They can defeat monsters and bosses with customized shuriken combinations. The results will vary depending on the placement and combination of shurikens. Additionally, the game offers various special skills that players can learn and upgrade to unleash upon the monsters. These skills are essential for advancing to higher leagues and completing quests.