Hi, I've played up to the third space level, and I like this game's concept! It's quite creative, and surprisingly challenging while still being pretty fun. I also like how the objects interact with each other in various ways.
That said, I do have several gripes with it that might be worth looking into:
- My biggest issue is that most of the game's mechanics aren't explained at all in either the main page or the game itself. It took me a while to figure out that I could and was supposed to break the blocks by hitting them from below, let alone what coins do, why objects will suddenly start falling faster than usual partway through some levels, what makes octopi come out of their holes, the fact that I could jump on the sewer slimes in order to kill them or whatever's going on with the space worm's movement pattern. Sometimes its hard to tell if something is even an intentional mechanic or a glitch.
- I'm not sure how to feel about the current lives system. The fact that you don't immediately lose your progress upon dying once is nice, especially considering the random nature of the game, but that effectively makes it a regular health system where taking damage pointlessly freezes the game for 3 whole seconds and teleports you to the top of the screen. Maybe try committing to one approach or the other.
- I'm not sure if this goes against your vision for the game, but I think there should be a way to select specific levels from the main menu so you don't have to replay the entire game every time you want to redo one specific level.
- Wasabi already complained about the octopus enemies and I agree with them for the most part, but personally I think the bullets are in the biggest need of a nerf at the moment. Right now they're alright most of the time, but if one spawns right above you it's almost impossible to react to it and avoid it, which can feel very cheap. I don't think nerfing their speed is a great idea because it's the main thing differentiating them from Thwomps, so maybe they should have some kind of telegraph before they actually enter the screen, or even be coded so as to never spawn right above the player.
- The UFO could use a clearer telegraph for its laser attack as well, unless the intention is for the player to memorize how long the downtime between attacks is. Also, maybe tweak its AI so it doesn't stay in one corner for a significant portion of the level.
- I think objects that disappear after a while, like coins and Thwomps, should have some kind of despawn animation, both so the game looks nicer and so you have a better feeling of how much time you have left to reach a coin. Even a simple flickering effect would probably do the trick.
- Coins have some really weird collision issues. Blocks falling on them will crush them into one tile and then wobble on top of them until they disappear, and sometimes they'll bounce off the player's head instead of being collected if the player jumps under them, especially if they're stacked on top of each other.
- Another apparent collision glitch I found makes it so that sometimes if the player moves into a block while in the air they'll cling to the side of the block instead of falling. It's especially common in the sewer and space levels for some reason.
- Yet another glitch makes it so that sometimes the slime drops in the sewer levels will spawn two slimes instead of one, randomly making it near-impossible to jump on them without dying.
- I'm not sure if this is even possible to fix, but I've noticed that sometimes, especially during "fast mode", two different objects will fall very close to each other and their sprites will overlap, which can lead to some unfair moments like dying because you tried to hit a falling block concealing a slime drop behind it.
Overall, I think the game has a lot of potential and is fun enough as is, but it could use a lot of polish. I hope this feedback helps.