COC is an extremely addictive strategy game for Android and IOS, which you build your village and attack other players' villages in. You can also join a clan and war against other clans, hence CLASH of CLANS.
They are putting out many games with the well known characters, Legend of Zelda, Mario and Pokemon, so they will need to rely on some other IPs as well. With smash coming they can show off lesser known characters and bring out a game for them.
Actually, the more you advance and the more you have to spend in graphics and processors, so they'll have a sort of balance. They may be faster, especially at translating stuff, but bugs and beta testings are still around the corner.