I recently played Type:Rider
, the complete playthrough (including secrets) took about 4 hours. The game is an enjoyable platformer with very interesting art direction based on the history of typography. The game does have some issue (wonky implementation, task switching can lead to problems, some unfair areas where you can't see what you're jumping into), but you have unlimited lives, and respawn points are very frequent, so it's unlikely to actually get stuck.
I loved how every level has a very unique feeling that is based on the depicted font and its history. I also enjoyed the educational aspects of the game (you can collect pages for books about the history of typography).
Also, if you ever thought that colons are woefully underfeatured in current games, _this_ is your game, because you're playing as one. (This line probably begs to be ripped out of the typographic context ...)