Castaway II: Isle of the Titans 2011

A 2D adventure game in which you complete quests, kill bosses, and explore the vast map all while learning new skills and crafting a variety of items. The flash game, developed by likwid, can be found on sites such as Armor Games, Kongregate, and Newgrounds. You wake up stranded on a desert island and must traverse through dangerous lands filled with a variety of monsters. Towns are spread across the island serving as fast travel locations and places to get quests, these can either be main story quests or side quests. There are also many large gates and doors you must get through to progress, all of which can only be opened once a boss is defeated. You are the pacemaker for the game and can even refrain from ending the game after defeating the final boss, in case you want to explore the world further.