Budget puzzlers that, at their core, feel quite familiar in some way are a bit difficult to score. There’s no question that Cosmic Express has a budget-priced blend of being smart, looking very cute, and steadily upping the challenge with new elements periodically across its many levels. I would say it’s better suited to puzzle veterans since the expectation is that you’ll work out and understand the increasing complexity through mere observation, and if you get stuck on some of its sometimes steep jumps in difficulty there’s really nothing that’s going to assist you. Still, the tougher the challenge the greater the reward, so for people who love a challenge that is still somehow generally quite relaxing this may be a train worth jumping on.