The Crazy Kings franchise

Established and successful since 2015
The Crazy Kings franchise currently includes two Free-to-Play tower defence and collectible card fantasy mobile games: Crazy Kings (iOS) and Crazy Defense Heroes (iOS and Android), with a new blockchain PC game in development. The games are produced and published by Animoca Brands and its wholly owned subsidiary TicBits.
Games in the Crazy Kings franchise blend a collectible card game, the pulse-pounding action of tower defense, the tactics of resource management, an RPG character and equipment system, and thrilling fantasy storylines with hundreds of levels of increasingly challenging gameplay. In addition to single player campaigns and other game modes, the games also have multiplayer events such as tournaments and similar competitions.
The basic principle of the games is simple: players must build defenses during each encounter to withstand the onslaught of enemy invaders. In addition to upgradeable buildings and their avatar with its equipped gear, players can also call upon mighty heroes to join their ranks and are able to use magic to blast enemies, slow them down, reveal the unseen, or create other real-time effects necessary to achieve victory.