Lambda Fortress is the iconic mod that brings the Team Fortress 2 mercenaries into Half-Life 2 and other Source campaigns for singleplayer &amp; co-op play. Now on Steam!

<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3564500/extras/552b3b6250ea75747e10c18214874cbe.avif?t=1749749047" data-big-src=https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3564500/extras_big/552b3b6250ea75747e10c18214874cbe.avif?t=1749749047 width=800 height=98 />Lambda Fortress is a mod for Team Fortress 2 that brings the mercenaries to the gritty world of Half-Life 2 and other Source Engine Campaigns! Play solo or cooperatively across iconic worlds with a unique twist.Fight your way through City 17, have a lunch break on the coast, or race to White Forest all with your friends!<h2 class="bb_tag" >Features:</h2><ul class="bb_ul"><li>Singleplayer and Multiplayer Co-Op Play!</li><li>Support for many Source Engine campaigns and map packs!</li><li>Supports Team Fortress 2 Inventories, bring your TF2 items into Lambda Fortress!</li><li>New Weapons!</li></ul><ul class="bb_ul"><li>Steam Workshop add-ons!</li></ul><ul class="bb_ul"><li>Additional weapons, game modes and campaign support over future updates!</li></ul>All this and more, now on Steam!<h2 class="bb_tag" ><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3564500/extras/01dbaf8931a0b41ff4fc5e0980babc8d.avif?t=1749749047" data-big-src=https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3564500/extras_big/01dbaf8931a0b41ff4fc5e0980babc8d.avif?t=1749749047 width=800 height=238 /></h2>

Good Game Database

Lambda Fortress Achievements