A fun and addictive high-score game with a clever theme execution and well-thought-out mechanics! It’s a strong entry overall, though the visuals can feel a bit overloaded at times, and the audio could use more variety to keep things fresh. Here is what I thought in more detail:

Game play / Fun / Engagement ●●●●●
The game play is very engaging and executed really well. Merging planets is satisfying and addictive, making you want to push for a higher score. The only issue I found is that holding down the left mouse button drops too many planets too quickly, which can be frustrating... Needed to get used to the mechanic. Also: The "next Piece" does not work all the times? But maybe this is due to the quick dropping of planets... It forces players to carefully tap instead, which slightly interrupts the flow. Still, this is a minor issue in an otherwise excellent game play loop! A strong 5/5. This was my high score:
 

Theme ●●●●●
Perfect use of the theme "limited space"... and in space! The title itself is funny, and the design makes the limitation feel central to the game play... you literally have limited space for the spheres. Easy 5/5.

Art Style / Visuals ●●●●○
You used the given shapes well and the planets fit the concept nicely. However, the visuals feel somewhat overloaded. The combination of glows, outlines, and a busy background can make the screen overwhelming at times. I’d suggest either leaning into distinctive textures for the planets (cartoony styles could work well) or simplifying to clean colored spheres without as many effects. That polish would take the visuals to the next level. Thus, 4/5.

Audio / Sound Design ●●●○○
The music fits the space theme well, but the sound effects are quite basic and repetitive. Adding different merge sounds depending on planet size would add a lot of depth, and menu/UI sounds would help polish the experience further. 3/5 here.

Great and polished suika game! The legenda and the setup for the game make the game feel complete. I also disagree with some comments, as dropping the balls randomly did not seem to get anywhere near the tally I would get if I placed the balls strategically. So that seems to be really well balanced.

The graphics are great, but it gets quite hard to distinguish the spheres from another and it gets harder to understand which spheres match. Especially ones the sun is dropped.

Apart from the polished suika game, I do have some issue with the limited shapes constraint. There are definitely only pentagons and circles used, but the actual gameplay is all build around a cube, where the spheres fall into. The UI and everything else works great with the limited shapes, but somehow having the pentagons in this particular setup feels like avoiding the actual limitations of the shapes for the gameplay. 

I was going to suggest having the bases of the pentagons hollow, so that balls can fit into the spaces. I do realise that that might cause the start of the suika game to be repetitive, as all the balls will slide into the pentagon, rather than a sturdy base.

6595 points! Feel like that's a good score :)

I've played your previous games in other jams, this one is a bit different, but I think in a good way. This one is simpler, but at the same time more polished. It feels like by having a less robust main mechanic you had more time to focus on every element of this game. The effect is great! I was genuinely happy, when the game allowed you to play after getting the last piece to go for the high score. Thanks to the indicator, you know exactly where the planets are going to be placed. Thanks to the instructions you know what's the order of the planets. Gameplay was clear from the beginning, and really enjoyable.

Graphics are also great, but I have two gripes- I don't know if the planet textures count as "forbidden" shapes (not gonna subtract points for that, though). The other is- the color of the first and sixth planet looked too similar to me. I dropped a wrong planet a couple of times thanks to this :) Again, not a huge issue.

Audio is there, and it's not annoying, but could be more. You could partner up with someone who makes music or use some that you can use for free for non commercial use. Check out https://mobygratis.com/, maybe you'll find something you like ;)

The use of theme is on point. The space is limited and it affects the gameplay in an interesting way. Cool :)

Over all- I really enjoyed your game. I think it's one of the best ones I've played in this jam! Keep it up!

Merge games work really well for this theme, and I love the concept - but I think the VFX really took away from the experience. The yellow sun in particular was quite difficult to look at, and it was on the screen for aaaages! The lighting also made some colours quite difficult to see, which made it a little frustrating to match things at times. I liked the quality of life features like the indicator for where it will drop, and the ability to rotate the play space. It felt like a good twist on the genre :) physics felt a little strange though, it wasn't particularly consistent and some interactions felt strange. I assume you used unity's built-in physics for it, but off-the-shelf solutions like that don't really work great when the game relies on physics so much!

really nice game! felt very satisfying, i did one run where i was careful about my placements and another where i just held click and placed randomly and ended up with a score of about the same each time, but i think that's just in the nature of suika. both runs were great fun :)

a few minor feedback points:

• would be nice if the game captured the mouse, i played non-fullscreen and the mouse would go outside the screen whenever i tried to rotate too far
• some of the smaller shapes felt a bit tricky to distinguish between, but honestly given the jam restrictions its hard to do that

overall its a fantastic submission and i really enjoyed it. great work!!

I also made a suika game ! Your graphs are better than mine, but I need a pair of sunglasses to play yours ^^'. Also, I think if you add some bounce, it can be more fun.