Cult games.

Columns is a cult game simply because Tetris overshadowed it. Columns was a fun game and very additcive, as evidenced by the fact I played until I had over 5,000,000 points.
I personally think it's better than Tetris, it's one step more complex than Tetris and that adds immensely to the gameplay.

Jam it back in, in the dark.

As excerpted from Wikipedia:

Originally Posted by Wikipedia Artice: Cult computer and video games

Cult computer and video games are computer and video games that usually garnered limited sales figures but attracted a loyal fanbase and earned generally great reviews from the press. The games that should be, or are, included on any "cult" list are often debated, due to the subjective nature of the title. Regardless of the disparity, there are a few themes that are shared by many titles in this category.

Some cult games have a limited production run due to weak public interest. Often these video games feature a visual style, storyline, or game mechanic that is out of the mainstream. A lack of marketing can add to this by ensuring that the game receives insufficient attention from the general public. Games like Ico or Rez fit several of these categories. Limited availability also presents an opportunity for a game to receive this classification. The game Katamari Damacy had limited availability, since it was initially released in Japan only, but many gamers were intrigued by it. The title was widely sought after and became a cult game and sleeper hit in many game import stores.

Of particular interest is the fact that actual game quality has little bearing on cult status--some games are notoriously bad yet that reputation has earned them more popularity than they would otherwise have attracted, e.g. the Atari 2600 game E.T., or Bad Dudes for the NES.

And generally I agree. Though I use the term "Sleeper hit" (as said in Computer Gaming World) as opposed to cult, because it flew below the radar of many gamers.

There's nowhere I can't reach.