But I would caution against being too picky about single-player experiences. The most meaningful games for me were not generally story-based, they were "play-based". Exploring mechanics, exploring a world, seeing what might be possible, what might lie out there to be found. Zelda, Pokémon, etc. A game doesn't have to be a work of literature to be meaningful and worthwhile; children in particular benefit from play. I would cite Minecraft as a good modern example of this ethos (which can of course be played either alone or with others, and is valuable in both modes).