Here's the deal: you have various coloured trucks, and each needs to pick up a parcel and deliver it to its destination. The truck can't double back on itself, and if you collide two trucks together then... well... you don't want that.

RGB Express is cute and dinky and delightful, and it's just the right level of challenge to keep you thinking and experimenting, without frustrating.

Here's my hands-on with the game.