The designer calls Seiklus an "exploration game", and this is very accurate. The game is more linear than Noctis in having an ultimate goal: to rescue your girlfriend who gets kidnapped in the introduction. But how you get there is largely up to your own investigation and keen observation. There is almost no plot advancement to speak of – you just explore new areas, try to collect as many colored pieces as you can, open up all the treasure boxes you can find, and find out what the treasures actually do. But the charm lies in its wonderfully immersive atmosphere, created partly by minimalist cartoon-style graphics and partly by the great gameplay design: the more you play, the more it opens up for you, like dangling a carrot. The puzzles are not difficult to solve, but they are all interesting – most of them reminiscent of the "real-world" puzzles in Out of This World (no inventory items).

I find Seiklus to be an absorbing, beautiful game that manages what very few adventure games can do: immerse you into its world. Fans of traditional adventure games may be dismayed at first to find that Mario-style jumping and collecting pieces is crucial to finishing the game, but Seiklus is far from being a typical Super Mario clone. Some parts are a bit repetitive (especially the underground cave), but the payoff is rewarding enough to warrant the amount of patience required. Truly a game that deserves to be called a "work of art". A must-have.