It was developed and published independently by Cly5m. The game focuses on exploration in lieu of action and sprawls over a large, stylistically drawn world. It has since inspired the development of other games, notably Knytt and Within a Deep Forest. The basic premise of Seiklus is simple: the avatar is sitting on a rock with their girlfriend, watching shooting stars, when a meteor hits and knocks them into the "World"; their objective is to collect a large quantity of 5 different colored flames and reunite with their girlfriend.Seiklus features a variety of different environments. Exploring a deep cave, monsters ready to suck you up and carry you off, venturing into an active volcano, exploring a lush woodland landscape, climbing to the top of incredibly high trees or sliding down a huge mountainside.The music in Seiklus is almost entirely Keygen music, complemented by basic ambient sounds.