The auto chess wars have begun.
Sparked by the surprise success of the Dota auto chess mod, created by Chinese team Drodo Studio, a number of big-name publishers and developers have quickly turned around efforts of their own - and they're proving early doors big hits.
Auto chess games are "auto battlers", that is, they're turn-based competitive multiplayer strategy games in which you send units out onto a board divided up into squares, then the combat plays out automatically. There's more to the genre than this, of course, but that's essentially it.