Suggestion: pan with mouse drag

[FXuZ]

In case the player might need to take a look at the whole map or to check something far away. This version of game does not seem to support panning so things might become hard if the player cannot find the downstairs or when he just want to check the monsters in the level with telepathy.

[coolwanglu]

Usually I use shift-space followed by _ to check the whole map.
But yeah, dragging should be more convenient.

[mozfreddyb]

hammer.js seems like a good fit.