Steam is Valve’s digital distribution service and multiplayer platform for PC games. It is currently the largest digital video game distributor in the world. They frequently offer huge discounts on older games, so you can buy titles that were released years ago for $5 and less. Members also have the option to trade Steam gifts and coupons. Customers have the option to request a refund on titles they purchased within 14 days and played for less than 2 hours.
Steam Greenlight allows indie developers to get their game seen, while Workshop integrates mods and other user-generated content for easy installation.