Team Fortress 2, video game, Steam Community Market, virtual items, trading, hats, skins, weapons, unusual effects, particle effects, vibrant colors, detailed textures, in-game economy, collectibles, rare items, animated decals, gaming culture, online multiplayer, first-person shooter, Valve Corporation, digital marketplace, user interface, browsing, searching, transaction history, secure trading, Steam Wallet funds, market listings, buy orders, sell orders, demand and supply, market trends, price graphs, item rarity, item quality, unusual hats, festive weapons, taunts, action figures, cosmetic sets, key trading, crate unboxing, virtual goods, e-sports, team-based gameplay, community-driven, Steam Guard authentication, item trading policy, Steam support.