Mini Metro

I am fond of underground transportation maps.
There's something about those colored lines and that iconography that really pleases my eyes and brain.

I believe that was enough of a reason to instantly buy Mini Metro on Google Play Store (https://play.google.com/store/apps/details?id=nz.co.codepoint.minimetro) as soon as I discovered it.
Maybe the fact the game is on sale - 80% off! - helped as well.

The game is really polished and has a clear minimalistic design, which is gorgeous.
The mechanics are simple: tube stops progressively appear on your map and you have to link them in the most efficient way in order to take your passengers to their destination. Make them wait too long and the game is over.
Every now and then you get little perks to ease your quest (extra tube line, tunnels, station upgrades, and so on...).

The premise is so simple and the gameplay so addictive I can't really put this down.
Give it a shot if you will; at current price, it's a bargain anyway.