Pros :
+ One of the best JP rhythm game right now. So, it have a lot of active players in game.
+ Full of vocaloid songs.
+ Have 6 vocaloid characters and male characters.
+ Have a lot of great 2D and 3D music videos (MVs).
+ Simple controls.
+ Several QoL features, imo the most important is changing the amount of live bonus (stamina) consumption per run or song, it can be set to 2 or 3 for optimal rewards or 5~10 for faster run.
+ Have different size of notes (especially big notes) as an unique mechanic, so higher difficulty charts are more challenging for player.
+ Fun (or pain) notes based by song lyrics.
+ Recent songs have some new gimmicks.
+ New mechanic (trace) is also unique and nice addition for extra challenge and visual, despite i'm very skeptic at first because it looks like a copy from other gacha rhythm games, but turnly it's an improvement.
+ Side flicks on Proseka can be ignored and it does not affect to combos, despite accuracy will be ruined.
+ Beautiful card artstyle which difficult to describe.
+ Less fanservice, eh wait...
+ Very care for story NPCs (like it have an unique art), tho i'm not a story reader.
+ Original project sekai characters are likeable and have good vocals or covers.
+ Popular voice actor or seiyuu, mostly come from rhythm, music, or idol series.
+ Keep releasing new charts and commissioned songs, so that's including introducing some vocaloid song producers and no more hibernation for the popular one.
+ All of 5 groups have a lot of great songs, especially Vivid Bad Squad and 25ji.
+ Feature to change song vocals. Including another vocal version, so some song have a bit change of lyrics and feeling/atmosphere.
+ Have some feature which can't be found in other gacha rhythm games. Even, some features are basically for players who likes to simp or oshi
Cons :
- Minimum requirements are high.
- The game size is too big, especially if download with some MVs or virtual live datas. There are autodelete features, but still nope for virtual live data cmiiw.
- 3D MV lag on some devices.
- New UI is very modern and refreshing, but it have several new problems.
- Lack of game settings and maybe lack of something common which can be found on other rhythm games.
- Hard to get limited ssr card you wants, except being a lucksack or whale.
- More grinding and farming if the game get a comparison with other gacha rhythm games out there (these are optional tho).
- Device dependency, than any other mobile rhythm games out there. Because it's somewhat harder to execute notes timing/accuracy especially on high difficulty charts (start from 28+) without proper device.
- Design of most master (highest difficulty) charts are annoying imo, thanks to their bad habit (from overcharting, difficulty spike, thin slides, difficult patterns, etc.). Not good for replayability after getting full combo (FC) or all perfect. Tho playing lower than master diff is still fine.
- Approx ⅓ of the total master charts are difficulty 30+, it means they releasing too much of difficult charts (fyi 30 is the level which is the start of huge difficulty jump/gap in game and it's very challenging to FC, even for dedicated proseka players too imo).
- Multifinger charts added into the game, so kek, rip dev statement about "all songs are made to be full comboable with 2 fingers".
± Append difficulty came, a new special difficulty where 4 or more fingers are needed to clear the chart. At least, they make it useless for now, so it can be nice for training or simply ignore it.
- Recent charts are getting harder and harder.
- Most charts difficulty rating are not suitable. Another difficulty rerating when?
- Quick summary, Proseka charts are designed more for satisfying pro rhythm players.
- Matchmaking in multiplayer mode is sometimes full of bugs.
- Playing master or append difficulty on multiplayer is less scoring and rewarding, especially if the player or device is suck with accuracy and combos. Even, the majority of Proseka players are picking to play hard or expert difficulty instead.
BTW I love proseka, that's why i put a lot of cons, hope they do better with the game in the future~
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TL;DR
Project Sekai is very aesthetically pleasing, fun, and challenging rhythm game. Also, it have a lot of vocaloid baits, make it very worth to play
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