Kingdom Rush - Epic game of tower defense available across multiple platforms.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
The Creeps - The Creeps is a Strategy, Tower-defense, Horror, Zombies and Single-player video game created by Super Squawk Software LLC.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Star Fox Guard - Star Fox Guard is a 3D, Strategy, Tower-defense, and Single-player video game developed and published by Nintendo.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.