At first glance, SeppuKuties looks a lot like Lemmings...you have cute creatures trying to get from point A to point B, and sometimes, some of them may perish; indeed, sometimes some of them need to perish for the greater good. Sounds pretty similar, right? But, in fact, SeppuKuties is pretty much an entirely different game. It's another game by Antony Lavelle (creator of the SHIFT series, as well as Shore Siege -- oh, and I recently discovered that he's also behind the IndestructoTank series, which I was completely unaware of before), and has many of the hallmarks of his games -- it's a clever concept, it's entertaining without being too long, and the level design is solid.
So the basic premise is that you are a band of ragtag but adorable creatures forced by deforestation and other nasty things to traverse a series of hazardous levels in order to reach Paradise Meadows. In each level, your goal is to reach the Golden Acorn. The action is pretty standard platforming fare -- jump across pits of spikes and lava, collect keys to open doors, that kind of thing -- but the twist is that your characters occasionally have no choice but to meet their demise. When one of your band perishes, you start with another animal, who can pick up where your last one left off. Sometimes you'll have to sacrifice yourself to get important items (e.g., bravely leaping into lava to get a key), while sometimes your corpse can serve as a useful stepping-stone for your comrades. However, your band only starts out with 30 animals, and it only gets smaller as you progress through the levels, so you can't be too reckless in throwing your creatures' lives away.
Anyway, that's about all there is. There's five worlds, each with four levels, and one final level. In each level, you're graded by how many deaths you suffer (compared to a par), and how many acorns scattered around the level you can collect. If your goal is to just beat the game, then this is pretty easy, but getting a high grade on all the levels or beating the game with only a few deaths are more difficult tasks that can keep you occupied for a while.
Overall, the level design is very sharp; there's lots of clever puzzles, and the levels do a good job of being relatively easy if you're willing to sacrifice a lot of cute, cuddly, adorable creatures, but much harder if you're trying to save as many animals as possible. The physics is pretty good, although occasionally it does seem to be a little loose; this doesn't really harm the gameplay (and indeed may help), so it's forgivable. The graphics are pretty good -- they're nicely decorated for a basic 2D platformer, and the animals are cute (maybe a little too cute, even...). The sound effects are pretty basic, but the music is very nice, and gets bonus points for there being a different theme for each of the five worlds, so you don't get completely sick of it. Yay!
Anyway, SeppuKuties is, overall, quite a bit of fun to play. It's a clever concept, and a well-implemented one. Like SHIFT, it does a good job of making you wish there were a few more levels you could play (unlike the scores of Kongregate games that make me wish there were fewer levels I had to play), and while it's not too difficult by itself, it offers enough added challenge to make you feel it's not a complete pushover. It's not a long game, but you should enjoy playing it.