Clash Royale is a good choice, its boring at first but exciting eventually
There are so many survival games out there. You would just need to type in survival on any device or browser or anything and it would come up with many games to play. The survival genre is very popular and developers are still coming out with new and better ones. Just do some searching and testing maybe read some reviews.
Resident Evil 7
7 Days to die
Far Cry 4
Left 4 Dead, if you're looking for a game to play missions. Dying Light, if you want to build an arsenal and free roam. State of Decay if you want an open world civilization game. Last Day On Earth if you want a mobile game. If you want the best game overall though Dying Light, it has the best overall qualities, fun, and playablity. Although if you can get two get State of Decay too as you will get a lot of fun and time out of it. It shows characteristics of all of the games on the list so is very versatile with it's fan base.