The game needs a lot of space, so if you have a phone with a lot of memory used up or a low end phone then you can't install all the updates needed for the game to run. But it has every single yu gi oh anime rolled into one as well as every summoning method, it has the simplistic but fumctional rule of 4000 life points, you can play either competitive or casual, and collecting cards and building your deck is so much fun. Highly recommend if you like strategy card games or you're a yu gi oh fan.