During the NicoNico Chokaigi 2015 event, Nintendo and Bandai Namco announced Gengar as the newest fighter in upcoming arcade fighter Pokkén Tournament.
The above video clip shows a look at the Gengar reveal during the Pokkén Tournament presentation. Gengar appears to have various Ghost-type moves, along with some psychic and a Lick attack.
Similar to the other Pokémon thus far in Pokkén Tournament, he has his own power up mode, which turns him into Mega Gengar, which we get a glimpse of at the end of the video.
Pokkén Tournament will launch in Japanese arcades this summer.