Two Factor Auth (2FA) - List of websites and whether or not they support 2FA

Waterpebble - Your little water saver

Rapid 2FA - A painless way to add two-factor authentication to your site

Lux Delux - Lux Delux is a game of strategy and domination inspired by the board game Risk.

TypingDNA Authenticator - 2FA codes in your browser, secured by the way you type

Ticket to Ride - Ticket to Ride is a Turn-based Strategy, Puzzle, Board, Co-op, Single, and Multiplayer video game created and published by Days of Wonder and Asmodee Digital.