Snap to grid

I am looking for advice on creating a city simulation game.

I need know how to make the snap to grid style that is essential to this type of game.

Thanks in advance

Here is an example how to create a snappy grid. This is just one way to do it:

Snappy grid demo

Hmm cant open the file as it says I need version 116 when the most current version is 114.

You can find all C2 releases here: scirra.com/construct2/releases

115 and 116 were beta releases.

aaah ok thanks

Thanks for that, I think it could work and if not it has given me ideas that will