According to the document, Samsung has evaluated startups such as Unity Technologies, a San Francisco-based developer of gaming platforms, and Green Throttle Games Inc., a Santa Clara, Calif.-based company that makes game controllers and software that connects mobile devices to televisions. It has also considered gaming pioneer Atari Inc., which Samsung could have used to offer classic games like Asteroids and Pong exclusively on its mobile phones. Atari auctioned off some of its properties this year as part of a bankruptcy filing after rejecting preliminary bids from several companies for its portfolio of games.