ISOTX announces open beta testing of Iron Grip: Marauders is now underway, offering the chance to check out this free-to-play browser-based strategy game. A new teaser trailer promotes the game, though it features no gameplay, so here's a bit on that: "As captain of a pirate airship, players roam the vast regions of Kathos in search of settlements to loot. The captured settlements are easily turned into pirate strongholds which provide additional building and training options in the game. From their headquarters in the sky, gamers can strategically plan their army’s size and composition. By researching new technologies, stronger units can be trained and new structures created."