Unidentified Stacking Object

Made for Ludum Dare 49 - Unstable

Your flying saucer is stuck on a weird planet, and your onboard radio can't reach the mothership! Build a communication tower tall enough to phone home in two different modes:

Time trial: Time is running out!

Endurance: Don't drop any pieces!

Controls:

Move: WASD / Arrow keys / L-Stick

Grab: Space / Gamepad "south" button

Pause: Esc      / Options button