Groups comparison

Gameplay innovation - 1971 to 2017
Games that really started something new.

In-genre gameplay innovation - 1981 to 2015
Innovates in some significant way within a genre, but not in a way that is notable for other types of games. Generally involves breaking out of the mold that other games establish for the genre.

gameplayinn
gameplayinn-ingenre
717375777981838587899193959799010305070911131517 123690