It's an early access game that may very well never be completed, and it's very clear while you play that the game is incomplete (only one boss, progressively fewer levels in each stage, power-ups that are only used once, etc), but what's there is a decent retro-style platformer with charm.
You run, punch, jump, swim and use a few special abilities to get through a variety of platforming-based levels. Controls are pretty good, although the momentum takes a little bit of getting used to. Each level contains 3 "mystery medals" to be collected, encouraging exploration. Besides those medals, though, the levels are loaded with lots of fun little secrets, usually rewarding you with gems (collect 100 for a 1-up), coins (to be spent on power-ups from a shop), or 1-ups. There are false walls, breakable walls, hidden blocks that make gems appear when hit, ceilings you can walk on... Basically, it's fun to explore every nook and cranny because odds are there's a lot of stuff to find.
There are a handful of transformations that mix up the mechanics a bit, but they only show up for one level each. I found them fun to use, so it's a shame we don't have many opportunities to use them. But then, there are very few levels in the whole game, so such is the downside of early access games, i suppose.
Cleared levels on the world map are marked in green, but levels cleared having discovered all three mystery medals are marked in gold, encouraging you to be a completionist. I actually really liked how the achievements were implemented. While one achievement is a fairly conventional "Beat the first boss without taking damage", the rest are challenges for specific levels that are significantly more difficult than playing the levels regularly would be. One stage needs to be beat without defeating any enemies, another without collecting any gems. A particularly unique one involves chasing down a flying potion by getting through the level as quickly as possible, and the secret achievement involves discovering a well-hidden nursery rhyme character. Achievements like this add to the game's enjoyment, as they encourage developing strategies and mastering particular mechanics. If the game ever gets more work put into it, I can see other stages getting the special treatment with similar achievements, which would be great.
So yeah, while it's a shame that this game might never get finished, I would still recommend it as a short but fun experience, especially if you exhaust everything it has to offer. Get it on special and you'll get one to two hours of entertainment.
